A novel grading method to compare sphero-cylinder spectacle refractions for instrument validation and remote lay dispensing

Author(s):  
Joshua S. Beveridge ◽  
Samuel J. Martin ◽  
Nathaneal R. Beveridge ◽  
Elise J. Metzger ◽  
Kyle A. Smith ◽  
...  
2012 ◽  
Vol 47 (6) ◽  
pp. 3019-3030 ◽  
Author(s):  
M. R. Ab Hamid ◽  
Z. Mustafa ◽  
N. R. M. Suradi ◽  
F. Idris ◽  
M. Abdullah

2019 ◽  
Vol 25 (1) ◽  
pp. 103-115
Author(s):  
Rini Agustiningsih ◽  
Dwi Rahdiyanta

An assessment instrument is one of the most important factors to guarantee objectivity, fairness, and accuracy in assessing the level of students' performances in the learning process. This study aims to produce an authentic assessment model in problem solving learning. The objectives of this studyare to examine: (1) the feasibility of the developed authentic assessment model in the aspects of practicality, effectiveness, and feasibility of assessment; and (2) the accuracy of the assessment results from the authentic assessment model. This study was a research and development that adopts the Analyze, Design, Develop, Implement, and Evaluate (ADDIE) development model. The research subjects consisted of eight teachers and 44 students selected with a purposive sampling technique. This study was conducted in 4 Vocational High Schools in Yogyakarta. The research instrument validation was examined by expert judgment. The data were collected using questionnaires and observation sheets. Its data wereanalysed with descriptive statistical techniques, inter-rater reliability, inter-item correlation, and intraclass correlation.The results of the study show that (1) the developed authentic assessment model was feasible to be implemented since it fulfilled the requirements of practicality, effectiveness and implementation; and (2) the level of accuracy of the assessment results from the authentic assessment model has a very good criteria with  κ mean  of 0.978.


Author(s):  
Christopher Langdon

This article aims to provide a synopsis of agent-based modeling and how to adapt an agent-based research strategy for the scientific study of complex business systems. Agent-based systems have been a popular field of study in computer science for some time. While computer science-related research has been focused on the artifact itself, such as computational languages and algorithms, research in the management sciences is explicitly focused on business problems. Research in Information Systems (IS) has begun to advance knowledge in the use of agent-based systems as a means to seek different, computational explanations for business phenomena that have eluded scientific inquiry reliant on traditional—specifically, law and axiomatic—explanation (Kimbrough, 2003). The focus on business problems requires a different research approach than what is successful in computer science. Key modifications include first, the explicit articulation of benefits specific to the management sciences, and second, instrument validation.


2012 ◽  
Vol 68 (12) ◽  
pp. 2756-2765 ◽  
Author(s):  
Dana N. Rutledge ◽  
Mary Wickman ◽  
Diane Drake ◽  
Elizabeth Winokur ◽  
Jeannine Loucks

Author(s):  
Setiawan Assegaff ◽  
Kurniabudi Kurniabudi ◽  
Hendri Hendri

<p>Knowledge sharing is important activity for create a new knowledge. Information technology today brings big oppurtubity for people in conduct knowledge sharing. This media provides effective and competitive technology tool for knowledge sharing. The aimed of this study is to report the on process research that investigates the success of social media for sharing knowledge among scholars in Indonesia. This study focus to discuss the instrument development stages from the research especially discuss how content validity conduct for in instrument validation progress. Method for content validation progress was adopting from Beck and Gale approach in nursing area. This study resulted in a validated instrument from content validation approach.</p>


2019 ◽  
Vol 152 (Supplement_1) ◽  
pp. S124-S124 ◽  
Author(s):  
Mark De Luna

Abstract Objectives The aims of the study were to perform an instrument validation of the HemosIL HIT-Ab (PF4-H) Assay and to compare the sensitivities and specificities of the three HIT tests (HemosIL HIT-Ab [PF4-H] Assay, PIFA Heparin/PF4 Assay, and Immucor PF4 ELISA) versus the gold standard Serotonin Release Assay performed in ARUP Laboratories and versus each other. Methods The HemosIL HIT-Ab (PF4-H) Assay was validated on the ACL TOP 750 using calibrators, controls, and samples from UF Pathology Laboratories and ARUP Laboratories that were previously tested for the HIT-Ab IgG via an ELISA method. EP Evaluator was used to calculate statistical data. Results A total of 116 samples were assayed using the HemosIL HIT-Ab (PF4-H) Assay and the PIFA Heparin/PF4 Rapid Assay. Overall, there were 125 positive tests and 255 negative tests for anti-PF4-H (ACL TOP 39 positive, 77 negative; PIFA 11 positive, 105 negative; ELISA 60 positive, 56 negative). There were 15 positive and 17 negative for the SRA. The comparison between the ACL TOP and SRA had a sensitivity of 80.0% and specificity of 35.3%. ELISA vs SRA had a sensitivity of 100.0% but had a 0.0% specificity. The PIFA vs SRA correlation had a sensitivity of 0.0% and specificity of 88.2%. The ACL TOP versus UF Health’s current HIT ELISA method had a good comparison as well, with a sensitivity of 61.7% and a specificity of 96.4%. Conclusion The three HIT methods (ACL TOP, ELISA, and PIFA) compared to the SRA showed that the ACL TOP had a good positive agreement, but poor negative agreement; however, the ACL TOP had a very good negative agreement with the ELISA method. The PIFA cartridge test had an overall poor performance with no positive agreement with the SRA and poor sensitivity versus the ACL TOP and ELISA methods.


2009 ◽  
Vol 65 (4) ◽  
pp. 893-900 ◽  
Author(s):  
Ming Liu ◽  
Lei Yin ◽  
Estela Ma ◽  
Siuha Lo ◽  
Lingxia Zeng

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