An investigation of the relative efficacy of four alternative approaches to importance-performance analysis

1985 ◽  
Vol 13 (4) ◽  
pp. 69-80 ◽  
Author(s):  
John L. Crompton ◽  
Nicholas A. Duray
Keyword(s):  
Performance Analysis ◽  
Relative Efficacy ◽  
Alternative Approaches

Evaluation of Public Information Systems

2013 ◽  
pp. 135-159
Keyword(s):  
Information Systems ◽  
Performance Analysis ◽  
Performance Measures ◽  
Public Information ◽  
Business Case ◽  
Cost Performance ◽  
Business Plans ◽  
Alternative Approaches ◽  
Public Information Systems ◽  
Risk Cost

Evaluation is a key element in preparation of the business case for an IT project. Business plans include discussion of costs and benefits, performance measures, progress milestones, assessment of risk, cost estimates for alternatives, and general justification for the advocated alternative. Approaches to evaluation range from the qualitative and general to the quantitative and specific. As identified in the chapter, evaluation activities may include comparisons of the agency with “best practices,” development of performance measures and benchmarks, and cost-performance analysis.

Empirically Validated Psychological Treatment: What Does It Mean in the Domain of Relationship Problems?

1997 ◽  
Vol 14 (1) ◽  
pp. 9-14 ◽  
Author(s):  
W. Kim Halford
Keyword(s):  
Clinical Significance ◽  
Treatment Effects ◽  
Psychological Treatment ◽  
Controlled Trials ◽  
Relative Efficacy ◽  
Relationship Problems ◽  
Psychological Treatments ◽  
Psychological Training ◽  
Alternative Approaches

The concept of empirically validated treatments is an attempt to focus psychological training and practice on treatments that work. In this paper, I examine the complexities of defining the concept with reference to the treatment of relationship problems. The key criterion employed to define a treatment as empirically validated is established efficacy within controlled trials. I suggest that the criteria need to be expanded to include assessment of the variability, clinical significance, and durability of treatment effects, the relative efficacy of alternative approaches, and the ease of dissemination of treatments. Whilst few, if any, psychological treatments currently have data on whether they meet all these criteria, I suggest that setting these more ambitious criteria will direct us towards the ultimate goal of offering better psychological treatments.

LARGE-SCALE PERFORMANCE ANALYSIS OF SWEEP3D WITH THE SCALASCA TOOLSET

2010 ◽  
Vol 20 (04) ◽  
pp. 397-414 ◽  
Author(s):  
BRIAN J. N. WYLIE ◽  
MARKUS GEIMER ◽  
BERND MOHR ◽  
DAVID BÖHME ◽  
ZOLTÁN SZEBENYI ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Large Scale ◽  
Waiting Times ◽  
Performance Measurements ◽  
Communication Time ◽  
Performance Deterioration ◽  
Alternative Approaches ◽  
Blue Gene ◽  
Data Collation ◽  
Processor Cores

Cray XT and IBM Blue Gene systems present current alternative approaches to constructing leadership computer systems relying on applications being able to exploit very large configurations of processor cores, and associated analysis tools must also scale commensurately to isolate and quantify performance issues that manifest at the largest scales. In studying the scalability of the Scalasca performance analysis toolset to several hundred thousand MPI processes on XT5 and BG/P systems, we investigated a progressive execution performance deterioration of the well-known ASCI Sweep3D compact application. Scalasca runtime summarization analysis quantified MPI communication time that correlated with computational imbalance, and automated trace analysis confirmed growing amounts of MPI waiting times. Further instrumentation, measurement and analyses pinpointed a conditional section of highly imbalanced computation which amplified waiting times inherent in the associated wavefront communication that seriously degraded overall execution efficiency at very large scales. By employing effective data collation, management and graphical presentation, in a portable and straightforward to use toolset, Scalasca was thereby able to demonstrate performance measurements and analyses with 294,912 processes.

Alternative approaches to ultra-high resolution imaging

1991 ◽  
Vol 49 ◽  
pp. 650-651
Author(s):  
J.M. Cowley
Keyword(s):  
High Resolution ◽  
High Voltage ◽  
High Resolution Electron Microscopy ◽  
Crystal Defects ◽  
High Resolution Imaging ◽  
General Applicability ◽  
Resolution Electron ◽  
Radiation Resistant ◽  
Resolution Imaging ◽  
Alternative Approaches

By extrapolation of past experience, it would seem that the future of ultra-high resolution electron microscopy rests with the advances of electron optical engineering that are improving the instrumental stability of high voltage microscopes to achieve the theoretical resolutions of 1Å or better at 1MeV or higher energies. While these high voltage instruments will undoubtedly produce valuable results on chosen specimens, their general applicability has been questioned on the basis of the excessive radiation damage effects which may significantly modify the detailed structures of crystal defects within even the most radiation resistant materials in a period of a few seconds. Other considerations such as those of cost and convenience of use add to the inducement to consider seriously the possibilities for alternative approaches to the achievement of comparable resolutions.

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