Results 21 to 30 of about 31,697 (261)
Cumulative sum analysis score and phacoemulsification competency learning curve [PDF]
International Journal of Ophthalmology, 2017 AIM: To use the cumulative sum analysis score (CUSUM) to construct objectively the learning curve of phacoemulsification competency. METHODS: Three second-year residents and an experienced consultant were monitored for a series of 70 phacoemulsification
Gustavo Vedana +7 more
doaj +1 more source
BACKWARD CUSUM FOR TESTING AND MONITORING STRUCTURAL CHANGE WITH AN APPLICATION TO COVID-19 PANDEMIC DATA [PDF]
Econometric Theory, 2020 It is well known that the conventional cumulative sum (CUSUM) test suffers from low power and large detection delay. In order to improve the power of the test, we propose two alternative statistics.
Sven Otto, J. Breitung
semanticscholar +1 more source
Signed sequential rank CUSUMs [PDF]
Computational Statistics & Data Analysis, 2018 CUSUMs based on the signed sequential ranks of observations are developed for detecting location and scale changes in symmetric distributions. The CUSUMs are distribution free and fully self-starting: given a specified in-control median and nominal in-control average run length, no parametric specification of the underlying distribution is required in ...
Lombard, F., van Zyl, C.
openaire +2 more sources
CONTROL CHARTS MONITORING FOR QUALITY CONCRETE PAVEMENTS [PDF]
Scientific Journal of Silesian University of Technology. Series Transport, 2020 In this article, Control charts are employed to analyse the strength quality control of ready-mixed concrete for rigid pavement. The results of the study support that CUSUM statistical analysis is more sensitive than the Shewhart control chart. The CUSUM
Izabela SKZYPCZAK +3 more
doaj +1 more source
Endoscopy International Open, 2022 Background and study aims In this study, we evaluated the performance of community hospitals involved in the Dutch quality in endosonography team regarding yield of endoscopic ultrasound (EUS)-guided tissue acquisition (TA) of solid pancreatic lesions ...
Hannah M. Schutz +13 more
doaj +1 more source
Adaptive fault detection in wind turbine via RF and CUSUM
IET Renewable Power Generation, 2020 Rapid developments of wind industry arise the issue of heavy monitoring tasks. The residual monitoring based on normal behaviour modelling is a highly recommended method when fault record information is missing.
Qifa Xu +3 more
semanticscholar +1 more source
Frontiers in Surgery, 2023 PurposeRecently, totally laparoscopic ileostomy reversal (TLAP) has received increasing attention and exhibited promising short-term outcomes. The aim of this study was to detail the learning process of the TLAP technique.MethodsBased on our initial ...
Zheng Xu +7 more
doaj +1 more source
Symmetry, 2020 The aim of this study was to derive explicit formulas of the average run length (ARL) of a cumulative sum (CUSUM) control chart for seasonal and non-seasonal moving average processes with exogenous variables, and then evaluate it against the numerical ...
R. Sunthornwat, Y. Areepong
semanticscholar +1 more source
Curvas de aprendizaje acumulado CUSUM en videolaringoscopia de valva angulada: estudio descriptivo
Educación Médica, 2021 Resumen: Introducción: La videolaringoscopia es una técnica recomendada para el manejo de la vía aérea; sin embargo, se requiere una medida objetiva como meta de entrenamiento. Métodos: Estudio descriptivo de curvas CUSUM, con porcentaje de éxito del 80%
Mario Andrés Zamudio Burbano +2 more
doaj +1 more source
Análisis de tendencias y variabilidad de la precipitación en las Cuencas Noroeste del Ecuador
Agroecosistemas, 2023 Examinar las alteraciones en la oferta hídrica asociadas a la variabilidad climática, es de gran importancia para ajustar adaptaciones frente a los cambios actuales y futuros, para esto se requiere comprender cambios históricos espacio-temporales en el ...
Matailo-Ramírez, Luis +2 more
doaj