Quantum speed problem: Theoretical hints for control

2016 ◽  
Vol 14 (03) ◽  
pp. 1650014
Author(s):  
Alexandre Coutinho Lisboa ◽  
José Roberto Castilho Piqueira
Keyword(s):  
Control Systems ◽  
Performance Measures ◽  
Quantum Control ◽  
Quantum Information Processing ◽  
Performance Measure ◽  
Point Of View ◽  
Theoretical Point ◽  
Control Engineering ◽  
Time Performance ◽  
And Performance

The transition time between states plays an important role in designing quantum devices as they are very sensitive to environmental influences. Decoherence phenomenon is responsible for possible destructions of the entanglement that is a fundamental requirement to implement quantum information processing systems. If the time between states is minimized, the decoherence effects can be reduced, thus, it is advantageous to the designer to develop expressions for time performance measures. Quantum speed limit (QSL) problem has been studied from the theoretical point of view, providing general results. Considering the implementation of quantum control systems, as the decoherence phenomenon is unavoidable, it is important to apply these general results to particular cases, developing expressions and performance measures, to assist control engineering designers. Here, a minimum time performance measure is defined for quantum control problems, for time-independent or time-dependent Hamiltonians, and applied to some practical examples, providing hints that may be useful for researchers pursuing optimization strategies for quantum control systems.

The Control of the Eye's Intrinsic Muscles: A Multivariable Optimum Performance Control System

1968 ◽  
Vol 1 (8) ◽  
pp. T.129-T.132 ◽  
Author(s):  
F. M. Toates
Keyword(s):  
Control System ◽  
Control Systems ◽  
Pupil Diameter ◽  
Control Model ◽  
Point Of View ◽  
Theoretical Point ◽  
Pupil Control ◽  
Performance Control ◽  
A Value ◽  
Intrinsic Muscles

The reciprocal interaction between the accommodation and pupil control systems of the human eye is examined from a theoretical point of view. The system, which is responsible for maintaining pupil diameter at a value which is a compromise between conflicting requirements, is represented by a control model, and is considered in terms of the concept of a performance index.

Abstract 3429: Implementation of Electronic Medical Record Stroke Templates Increases Compliance with Stroke Performance Measures

Stroke ◽  
2012 ◽  
Vol 43 (suppl_1) ◽  
Author(s):  
Crismely A Perdomo ◽  
Vepuka E Kauari ◽  
Elizabeth Suarez ◽  
Olajide Williams ◽  
Joshua Stillman ◽  
...  
Keyword(s):  
Medical Record ◽  
Electronic Medical Record ◽  
Performance Measures ◽  
New York State ◽  
Stroke Care ◽  
Performance Measure ◽  
Performance Comparison ◽  
York State Department ◽  
Free Text ◽  
And Performance

Background and Purpose The literature demonstrates how utilizing evidence-based, standardized stroke care can improve patient outcomes; however, the contribution of electronic medical record (EMR) systems may also impact outcomes by ensuring utilization and compliance with established stroke performance measures, facilitating and improving documentation requirements, and standardizing approach to care. In 2008, documentation in patients’ medical records was done in combination of paper and a template free EMR. Originally, the EMR was used for order entry, then transitioned to full electronic documentation in 2009. At that time we implemented our stroke templates and performance measures based on regulatory standards. We hypothesized that the stroke template implementation would help us achieve performance measure criteria above state benchmarks as set out by the New York State Department of Health (NYS DOH). Methods Implementation was phased in [over 18 months], initially using a template that only included neurological assessment and free text fields for stroke measures. By July 2010, existing templates were modified and additional stroke templates were implemented to meet new regulatory requirements and meaningful use criteria. Retrospective data review was conducted for performance comparison between 2008 -- one year prior to EMR/template implementation -- and 2010. In Quarter 1 of 2011 EMR was also implemented in the Emergency Department (ED). Data was reviewed for compliance with stroke measures. Results Documentation compliance substantially improved between 2008 and Quarter 1 2011: Compliance for these measures has been maintained ≥ 85% since November 2010, ≥ 90% Q1 2011 Conclusions The EMR implementation of stroke templates and performance measures can produce substantial improvement in performance measure compliance. Future steps will include automated documentation alerts to retrieve information and real time discovery of missing documentation for concurrent quality review and improvement

scholarly journals Strategic Costing Models as Strategic Management Accounting Techniques at Private Universities in Riau, Indonesia

2019 ◽  
Vol 11 (1) ◽  
pp. 274
Author(s):  
Evi Marlina ◽  
Hendri Ali Ardi ◽  
Siti Samsiah ◽  
Kirmizi Ritonga ◽  
Amris Rusli Tanjung
Keyword(s):  
Higher Education ◽  
Strategic Management ◽  
Organizational Performance ◽  
Value Chain ◽  
Education Institution ◽  
Point Of View ◽  
Theoretical Point ◽  
Activity Based Costing ◽  
Education Organization ◽  
And Performance

As a strategic management in accounting, strategic coasting has attracted the practioners and scholars because the significant influences to comptetitive advantage and organizational performance. This study is aim to explore integrated strategic costing model as an effort to improve competitive advantage and performance of higher education institution. This study also provide the guideline for effectively and efficiently of cost control. A specific strategic costing –activity based costing, value chain costing, quality costing, lifecycle costing and target costing- was elaborated through literature review form each attributes simultaneously and according to comprehensive model that integrated each of principles. The study concluded the scheme is compatible and complete each other according to theoretical point of view due to the integrated implementation of the principles and attributes contribute to organization performance improve. We also argue that the scheme is contribute to distribution of strategic costing attribute and exploitation of organization resources. A new management system proposing to the incorporation of strategic costing attributes into the management of higher education organization resources, and some recommendations for practical use are presented.

scholarly journals Local public innovation: an analysis of its perceived impacts on public performance

2020 ◽  
pp. 002085232096321
Author(s):  
Yoann Queyroi ◽  
David Carassus ◽  
Christophe Maurel ◽  
Christophe Favoreu ◽  
Pierre Marin
Keyword(s):  
Public Sector ◽  
Point Of View ◽  
Theoretical Point ◽  
Public Performance ◽  
Local Authorities ◽  
Internal Resources ◽  
The Public ◽  
And Performance ◽  
Public Organisations ◽  
The Impact

This article explores public innovations implemented by local authorities, which consider them as a key means of improving their performance in response to a restrictive context. The authors thus propose to grasp the impacts of these innovations in terms of perceived performance from a global and multidimensional point of view. Based on a quantitative study conducted among French local authorities, this research first presents the results obtained from a theoretical point of view, providing insight into the multiple impacts of implementing innovations within the public sector. Then, at the managerial level, the study identifies specific impacts for each type of public innovation, the aim being to structure the innovation portfolio of public organisations. Points for practitioners An increasing number of innovations are being introduced in the public sector. However, the impact of these innovations on public performance is often not assessed. That is why by focusing our research on French local authorities, we guide managers both in analysing this influence by distinguishing several types of innovation and performance, and in building a portfolio of innovations in line with the internal resources of their local authority, as well as the public service provided in response to the needs of the territory.

Operational performance measures for startups

2018 ◽  
Vol 22 (1) ◽  
pp. 31-41 ◽  
Author(s):  
Nopadol Rompho
Keyword(s):  
Performance Measures ◽  
Statistical Tests ◽  
Chief Executive ◽  
Performance Measure ◽  
Survey Method ◽  
Analysis Tool ◽  
Content Type ◽  
Perceived Importance ◽  
Large Corporations ◽  
And Performance

PurposeThe purpose of this study is to investigate the uses of performance measures in startup firms, including perceived importance and performance of those measures. Design/methodology/approachThe survey method is used in this study. Data are collected from founders/chief executive officers/managers of 110 startups in Thailand. The correlation analysis and analysis of variance techniques are used as the analysis tool in this study. FindingsThe results show that there is a positive relationship between the perceived importance and the performance of each metric. However, no significant differences are found in the importance and performance of each metric among the various stages of startups. Research limitations/implicationsBecause there are so few startups compared to large corporations, the sample size of this study is relatively small, which is a limitation for some statistical tests. Practical implicationsStartup should measure and monitor the correct metrics in a particular stage, instead of trying to perform well in all areas, which will lead them to lose focus, and possibly even fail. Results obtained from this study will aid startups in properly monitoring and managing their performance. Originality/valueUnlike large corporations, the performance measures used by startups vary, and depend on a startup’s stage and type. Because of the fact that there are much fewer startups than large corporations, there are a limited number of studies in this area. This research is among the first studies that try to investigate the uses of performance measure for this new type of organizations.

Validity of Selection Tests: A Study

1980 ◽  
Vol 5 (4) ◽  
pp. 267-274
Author(s):  
Mirza S. Saiyadain
Keyword(s):  
Performance Evaluation ◽  
Performance Appraisal ◽  
Performance Measures ◽  
Significant Relationship ◽  
Test Scores ◽  
Performance Measure ◽  
First Year ◽  
Subsequent Performance ◽  
Evaluation Scores ◽  
And Performance

Several reasons have been offered for the depressed values of coefficients of correlation between performance evaluation scores and test scores for tests that otherwise seem to have high validity. Most of these studies have concerned themselves with only the first year performance measure. This study was undertaken to broadbase the validity design by including performance measures of three subsequent years. Data on the test and performance scores of a sample of executives were analysed. The results indicate that though test scores may not show significant relationship with the first year performance appraisal score, they show positive and significant relationship with subsequent performance appraisal scores. The results are explained in terms of changed performance evaluation.

Improving Interlending through Goal Setting and Performance Measurement

1993 ◽  
Vol 21 (1) ◽  
pp. 13-17
Author(s):  
John Willemse
Keyword(s):  
Performance Measurement ◽  
Goal Setting ◽  
Performance Measures ◽  
Point Of View ◽  
Actual Performance ◽  
And Performance ◽  
Effective Service ◽  
Over Time ◽  
The Ideal

The local availability of needed publications is, from most users′ point of view, probably the most appropriate measure of a library′s effectiveness. Although immediate availability is the ideal, interlending offers a way to improve availability over time. With the goal of maximum availability in the shortest possible time, the interlending section of the Unisa Library has developed a number of performance measures to determine its effectiveness. The performance measures were instrumental in targeting problem areas which could contribute to a more effective service by technological and other means. Briefly describes the rationale behind the performance measures and the actual performance attained, as well as the factors contributing towards their improvement.

Manipulation and performance persistence: an examination of Iranian equity mutual fund performance

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Mahsa Hosseini ◽  
Mohammad Khodaei Valahzaghard ◽  
Ali Saeedi
Keyword(s):  
Mutual Funds ◽  
Performance Measures ◽  
Mutual Fund ◽  
Performance Measure ◽  
Performance Persistence ◽  
Content Type ◽  
Lower Tertile ◽  
Time Horizons ◽  
Equity Mutual Funds ◽  
And Performance

Purpose This paper aims to study manipulation and performance persistence in equity mutual funds. To this end, Manipulation-Proof Performance Measure (MPPM) and Doubt Ratio, along with a number of current performance measures are used to evaluate the performance of equity mutual funds in Iran. Design/methodology/approach The authors investigate performance manipulation by 1) comparing the results of the MPPM with the current performance measures, 2) checking the Doubt Ratio to detect suspicious funds. Additionally, the authors investigate performance persistence by forming and evaluating portfolios of the equity mutual funds at several time horizons. Findings The authors conclude that there is no evidence of performance manipulation in the equity mutual funds. Additionally, when comparing the performance of the upper (top) tertile portfolios and the lower tertile portfolios, in all of the studied 1, 3, 6 and 12-month horizons, the authors find performance persistence in the equity mutual funds. Originality/value To the best of the authors’ knowledge, this research is the first study to investigate the performance manipulation in the Iranian equity mutual funds, and also is the first study in Iran that uses the MPPM and the Doubt Ratio in addition to a number of current performance measures to investigate the performance persistence in the equity mutual funds at several time horizons.

The Arousal-Performance Relationship: Task Characteristics and Performance Measures in Track and Field Athletics

1988 ◽  
Vol 2 (1) ◽  
pp. 13-27 ◽  
Author(s):  
Vicki Ebbeck ◽  
Maureen R. Weiss
Keyword(s):  
Performance Measures ◽  
Task Complexity ◽  
Performance Measure ◽  
Track And Field ◽  
High School Athletes ◽  
Maximal Performance ◽  
And Performance ◽  
Performance Results ◽  
The Relationship

Two issues regarding the arousal-performance relationship in sport were addressed in this study: the relationship between task complexity, optimal arousal, and maximal performance, and the appropriateness of using various measures of performance. Data were collected from high school athletes (n=51) across four track and field meets. State anxiety was obtained prior to each performance and three performance measures were obtained (event results, and quality of performance evaluated by the athlete and by the coach). Results indicated that the three performance measures were not equally related to A-state, suggesting that the relationship between arousal and performance results in a different description depending upon the performance measure that is used. Furthermore, degree of task complexity could not be distinguished across various track and field events. When individual events were used to examine the arousal-performance/task complexity relationship, results revealed that level of A-state needed for maximal performance could not be differentiated for specific events, nor could it be determined for above average, average, or below average performances on any one event.

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