scholarly journals Strategies for Evaluating Quality Assurance Procedures

2008 ◽  
Vol 47 (6) ◽  
pp. 1785-1791 ◽  
Author(s):  
Imke Durre ◽  
Matthew J. Menne ◽  
Russell S. Vose
Keyword(s):  
Quality Assurance ◽  
Development Process ◽  
Daily Precipitation ◽  
Evaluation Process ◽  
Careful Analysis ◽  
Climate Data ◽  
Initial Development ◽  
Statistical Confidence ◽  
Manual Inspection ◽  
Evaluation Strategies

Abstract The evaluation strategies outlined in this paper constitute a set of tools beneficial to the development and documentation of robust automated quality assurance (QA) procedures. Traditionally, thresholds for the QA of climate data have been based on target flag rates or statistical confidence limits. However, these approaches do not necessarily quantify a procedure’s effectiveness at detecting true errors in the data. Rather, as illustrated by way of an “extremes check” for daily precipitation totals, information on the performance of a QA test is best obtained through a systematic manual inspection of samples of flagged values combined with a careful analysis of geographical and seasonal patterns of flagged observations. Such an evaluation process not only helps to document the effectiveness of each individual test, but, when applied repeatedly throughout the development process, it also aids in choosing the optimal combination of QA procedures and associated thresholds. In addition, the approach described here constitutes a mechanism for reassessing system performance whenever revisions are made following initial development.

The Significance of the Quality of Life Technology (QoLT) Center: Focused on the Center's Initial Development Process

2014 ◽  
Vol 15 (3) ◽  
pp. 1-28
Author(s):  
Kim Dong-il ◽  
정소라 ◽  
남지은 ◽  
이재호 ◽  
김경선
Keyword(s):  
Quality Of Life ◽  
Development Process ◽  
Initial Development

scholarly journals Interactive Media Development of Procedures for Prayer (Tara Shalat) Based on Adobe Flash in Improving the Skills of Madrasah Ibtidaiyah Prayers

2019 ◽  
Vol 11 (2) ◽  
pp. 159-182
Author(s):  
Guntur Cahyono
Keyword(s):  
Field Trial ◽  
Development Process ◽  
Formative Evaluation ◽  
Interactive Learning ◽  
Interactive Media ◽  
Evaluation Process ◽  
First Grade ◽  
Development Research ◽  
Adobe Flash ◽  
Final Design

This research aims to develop interactive learning media for adobe flash-based prayer procedures/Tara (Tata Cara Shalat). Interactive media can develop prayer skills that are taught in the habituation process since the first grade of Madrasah Ibtidaiyah (MI).  This research used development research (RD) methods.  The development process in this study reached the stage of the formative evaluation process consisting of three steps, namely individual prototype material trials, small group trials, and field tryouts.  This field trial involved subjects in a larger class, involving 15-30 (a whole class of learners) or larger groups, namely the available classes.  The results of this field trial were used to make a product, material, or final design revisions. Interactive learning media can solve the problem of prayer skills regarding recitation and movement of prayer.  Thus, interactive learning media made it easier for students to understand the procedures for prayer quickly; besides, the learning process will be more enjoyable

Evidence-Based Assurance to Support Process Quality in the F/OSS Community

2007 ◽  
pp. 120-146
Author(s):  
Anas Tawileh ◽  
Omer F. Rana ◽  
Wendy Ivins ◽  
Stephen McIntosh
Keyword(s):  
Quality Assurance ◽  
Open Source ◽  
Open Source Software ◽  
Growth Rates ◽  
Development Process ◽  
End Users ◽  
Evidence Based ◽  
Software Developers ◽  
Substantial Growth ◽  
Development Processes

This chapter investigates the quality issues of the free and open source software (F/OSS) development processes. It argues that software developed within the F/OSS paradigm has witnessed substantial growth rates within the software developers’ community. However, end users from outside the community are still sceptical about adopting F/OSS because of the perceived lack of quality assurance mechanisms within the F/OSS development process. The authors aim to promote higher adoption of F/OSS artefacts outside the developers’ community by exploring possibilities to provide appropriate evidence based assurances that F/OSS artefacts will meet the quality levels expected by users.

Functional Requirements and Quality Assurance Necessary for Successful Incorporation of Electroporation-Based Therapies Into Clinical Practice

2020 ◽  
Vol 14 (1) ◽  
Author(s):  
Eva Pirc ◽  
Matej Reberšek ◽  
Damijan Miklavčič
Keyword(s):  
Quality Assurance ◽  
Clinical Practice ◽  
Medical Device ◽  
Development Process ◽  
Functional Requirements ◽  
Socioeconomically Disadvantaged ◽  
Pulse Parameters ◽  
Disadvantaged Populations ◽  
Safety Guidelines

Abstract Electroporation-based therapies have a huge potential for implementation into clinical practice in socioeconomically disadvantaged populations. Currently, the price of electroporators and electrodes is relatively high, but custom low budget devices can be developed. In the paper, we describe three most established applications in medicine, with the focus on the basic mechanisms, which should be taken into account during the development process of a clinical electroporator. Also, typical pulse parameters used in each of the described applications are defined. In the second part of the paper, we describe technical functional requirements for a clinical electroporator and safety guidelines, with the focus on medical device standard. At the end of the paper, the focus moves to a more general problematic, such as quality assurance and the importance of measurement during the pulse delivery, which we firmly believe is necessary for successful electroporation.

SAR Phase Unwrapping Using Region-Growing with Polynomial-Based Phase Prediction

GEOMATICA ◽  
2020 ◽  
Author(s):  
Benjamin Brunson ◽  
Baoxin Hu ◽  
Jianguo Wang
Keyword(s):  
Quality Assurance ◽  
Simulated Data ◽  
Region Growing ◽  
Speckle Noise ◽  
Phase Unwrapping ◽  
Solution Quality ◽  
Northern Ontario ◽  
Statistical Confidence ◽  
Processing Strategies ◽  
Phase Prediction

Phase Unwrapping for Synthetic Aperture RADAR Interferometry (InSAR) remains a challenge due to the speckle noise and temporal decorrelation present in many interferograms. This paper proposes a Polynomial-Based Region-Growing Phase Unwrapping (PBRGPU) approach that builds from the Region-Growing Phase Unwrapping (RGPU) approach developed by Xu and Cumming in 1996 (Xu and Cumming, 1996). This approach iteratively performs phase unwrapping at the edges of multiple seeded regions using a least-squares polynomial phase prediction, and conducts statistically rigorous quality assurance to identify low quality pixels from further processing. The approach uses a desired statistical confidence interval as its main parameter, which is more intuitive to users than other threshold parameters. The proposed approach is currently the only phase unwrapping approach to take this strategy with its quality assurance. The proposed approach improved upon the solution quality of the RGPU approach, in some cases achieving a tenfold decrease in RMSE for simulated data. Applying the proposed approach to RADARSAT-2 data collected over Polar Bear Provincial Park in Northern Ontario, Canada yielded positive results, and the PBRGPU approach consistently performed on par with or outperformed SNAPHU in terms of solution quality. The PBRGPU approach does lag behind SNAPHU in terms of the domain of the solution, with SNAPHU unwrapping a significantly larger portion of the interferogram in all test cases, but this issue could be mitigated through post-processing the unwrapped interferogram. The proposed approach provides a solid foundation for adaptive region-growing algorithms that integrate all available information rather than relying on pre-processing strategies.

scholarly journals A Formal Protocol to Conduct Usability Heuristic Evaluations in the Context of the Software Development Process

2018 ◽  
Vol 7 (2.28) ◽  
pp. 10 ◽  
Author(s):  
Freddy Paz ◽  
Freddy A. Paz ◽  
José Antonio Pow-Sang ◽  
César Collazos
Keyword(s):  
Software Development ◽  
Development Process ◽  
Evaluation Method ◽  
Evaluation Process ◽  
Usability Evaluation ◽  
Comprehensive Analysis ◽  
Heuristic Evaluation ◽  
Software Development Process ◽  
Software Products ◽  
Software Product

Heuristic evaluation is one of the most used techniques to evaluate the level of usability of a software product. In this research, we performed a comprehensive analysis of the recent studies which report the use of this method in the context of a software development process. The purpose was to identify the specific way in which each author performs this usability evaluation method, in order to propose a formal protocol. After an indeed examination of these studies, we have determined there are several differences in the way this technique is conducted according to the literature. There is no agreement about the number of inspectors that should participate, the usability principles that should be used, the profile of the specialists who must be part of the assessment team, or the evaluation process that should be followed. This work highlights the available settings and a detailed procedure to perform a heuristic evaluation in the domain of software products.  

PERSIANN-CDR: Daily Precipitation Climate Data Record from Multisatellite Observations for Hydrological and Climate Studies

2015 ◽  
Vol 96 (1) ◽  
pp. 69-83 ◽  
Author(s):  
Hamed Ashouri ◽  
Kuo-Lin Hsu ◽  
Soroosh Sorooshian ◽  
Dan K. Braithwaite ◽  
Kenneth R. Knapp ◽  
...  
Keyword(s):  
Daily Precipitation ◽  
Radar Data ◽  
Climate Data ◽  
Data Record ◽  
Global Precipitation ◽  
Climate Data Record ◽  
Climate Studies ◽  
Rainfall Estimates ◽  
Good Agreement

Abstract A new retrospective satellite-based precipitation dataset is constructed as a climate data record for hydrological and climate studies. Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks–Climate Data Record (PERSIANN-CDR) provides daily and 0.25° rainfall estimates for the latitude band 60°S–60°N for the period of 1 January 1983 to 31 December 2012 (delayed present). PERSIANN-CDR is aimed at addressing the need for a consistent, long-term, high-resolution, and global precipitation dataset for studying the changes and trends in daily precipitation, especially extreme precipitation events, due to climate change and natural variability. PERSIANN-CDR is generated from the PERSIANN algorithm using GridSat-B1 infrared data. It is adjusted using the Global Precipitation Climatology Project (GPCP) monthly product to maintain consistency of the two datasets at 2.5° monthly scale throughout the entire record. Three case studies for testing the efficacy of the dataset against available observations and satellite products are reported. The verification study over Hurricane Katrina (2005) shows that PERSIANN-CDR has good agreement with the stage IV radar data, noting that PERSIANN-CDR has more complete spatial coverage than the radar data. In addition, the comparison of PERSIANN-CDR against gauge observations during the 1986 Sydney flood in Australia reaffirms the capability of PERSIANN-CDR to provide reasonably accurate rainfall estimates. Moreover, the probability density function (PDF) of PERSIANN-CDR over the contiguous United States exhibits good agreement with the PDFs of the Climate Prediction Center (CPC) gridded gauge data and the Tropical Rainfall Measuring Mission (TRMM) Multi-Satellite Precipitation Analysis (TMPA) product. The results indicate high potential for using PERSIANN-CDR for long-term hydroclimate studies in regional and global scales.

Intellectual Property Challenges for the Modern Biotechnology Enterprise: An Overview

2017 ◽  
Vol 23 (1) ◽  
Author(s):  
Mindaugas Kiskis
Keyword(s):  
Experimental Data ◽  
Development Process ◽  
Legal Protection ◽  
Global Competition ◽  
Ip Protection ◽  
Initial Development ◽  
Market Responses ◽  
Development Costs ◽  
Legal Innovation ◽  
Modern Biotechnology

The paper investigates the IP protection in the field of biotechnology among new innovators. Incompatibilities of the development process in modern biotechnology and the current IP systems are highlighted. Development process in biotechnology is notoriously slow, characterized by long delays in obtaining experimental data and marketing approvals. Initial development stages have been accelerated by the development in silico, by the global competition and accessibility of information. Thus, the most valuable part of the innovation (e.g., genetic sequence, protein structure) may be known years before the full experimental data. This significantly increases the risks of losing IP protection due to competing development, espionage, accidental disclosure, urging the premature patenting despite lack of resources to maintain global patents. Moreover, in biotechnology enterprise prohibitive costs of international patenting deplete the limited development resources and adversely affect both patenting and development. Costs are compounded by the increasing complexity of obtaining IP protection. Some of the complexities are recognized and underline multiple legislative interventions in establishing special regulations for biotechnology. The market also adjusted through practices such as evergreening. Unfortunately, legislative and market responses are not serving new innovators and may be contributing to the biotechnology patenting conundrums. The paper suggests that new legal innovation is needed in order to sustain healthy innovation in biotechnology and address the needs of new innovators. Several general and specific features for advancement of the legal protection of biotechnology are proposed for further research and discussion.

The Assessment and Assurance of Pressure Vessel Reliability

1975 ◽  
Vol 189 (1) ◽  
pp. 391-404 ◽  
Author(s):  
R. W. Nichols
Keyword(s):  
Quality Assurance ◽  
Pressure Vessel ◽  
Reliability Assessment ◽  
Pressure Vessels ◽  
Nuclear Industry ◽  
Detailed Design ◽  
Confidence Levels ◽  
Statistical Confidence ◽  
Reliability Assessments ◽  
Operational Behaviour

The factors involved in assessing the reliability of pressure vessels drawing extensively upon the developments which have arisen from applications in the nuclear industry. Existing assessments of reliability and operational behaviour highlight some improvements which could result from more detailed design assessments especially with respect to stress analysis, stress transients and the significance of defects. Additionally the contributions to reliability made by fabrication and materials technology, inspection and quality assurance and post operational surveillance are critically examined. The use of such data in synthesizing a reliability assessment is discussed noting the problems of establishing statistical confidence levels and highlighting those areas where further evidence would produce significant advances in quantifying reliability assessments.

Computation Algebras

2001 ◽  
Vol 11 (5) ◽  
pp. 597-636
Author(s):  
MICHAŁ WALICKI ◽  
MAGNE HAVERAAEN ◽  
SIGURD MELDAL
Keyword(s):  
Mathematical Description ◽  
Development Process ◽  
Data Dependencies ◽  
Evaluation Strategy ◽  
Algebraic Specifications ◽  
Evaluation Strategies ◽  
Hardware Architectures ◽  
Computational Aspects ◽  
Hardware Platforms ◽  
Associated Data

We introduce a framework that generalizes algebraic specifications by equipping algebras with descriptions of evaluation strategies. The resulting abstract mathematical description allows one to model the implementation of algebras on various platforms in a way that is independent of the function-oriented specifications.We study algebras with associated data dependencies. The latter provide separate means for modelling computational aspects apart from the functional specifications captured by an algebra. The formalization of evaluation strategies (1) introduces increased portability among different hardware platforms, and (2) allows a potential increase in execution efficiency, since a chosen evaluation strategy may be tailored to a particular platform. We present the development process where algebraic specifications are equipped with data dependencies, the latter are refined, and, finally, mapped to actual hardware architectures.

Sign in / Sign up

Export Citation Format

Share Document