Search results for "Errors"
showing 10 items of 279 documents
Modeling and Mitigating Errors in Belief Propagation for Distributed Detection
2021
We study the behavior of the belief-propagation (BP) algorithm affected by erroneous data exchange in a wireless sensor network (WSN). The WSN conducts a distributed multidimensional hypothesis test over binary random variables. The joint statistical behavior of the sensor observations is modeled by a Markov random field whose parameters are used to build the BP messages exchanged between the sensing nodes. Through linearization of the BP message-update rule, we analyze the behavior of the resulting erroneous decision variables and derive closed-form relationships that describe the impact of stochastic errors on the performance of the BP algorithm. We then develop a decentralized distribute…
Finnish EFL learners' perceptions on errors, corrective feedback and foreign language anxiety
2012
Virheiden merkitys vieraiden kielten oppimisessa on tunnustettu aina 1970-luvulta lähtien, jolloin virheet alettiin nähdä välttämättömänä osana kielen ja sen sääntöjen oppimista. Virheiden tekemiseen vieraan kielen opiskelussa liittyy oleellisena osana opettajan oppijoille antama korjaava palaute (corrective feedback). Opettajan ja oppilaan vuorovaikutuksen, jota korjaava palaute osaltaan edustaa, on kuitenkin todettu voivan aiheuttaa oppijoissa ahdistuneisuutta ja pelkoa (anxiety). Tässä tutkielmassa kartoitetaan, millaisia suullisia virheitä suomalaiset yhdeksäsluokkalaiset englannin kielen oppitunneilla tekevät ja miten noloina he niitä pitävät. Tarkoituksena on myös selvittää, miten he …
Current transformers effects on the measurement of harmonic active power in LV and MV networks
2011
The harmonic active power is used to determine the location of polluting loads, the direction of harmonic power flow and to estimate how consequential a certain current harmonic source is. The highest uncertainties, when measuring harmonic active power, are introduced by the current and voltage transducers. This paper presents experimental results which show the impact of current transformers (CTs) on the accuracy of the harmonic power measurements. An expression for the evaluation of the power error in distorted conditions was developed which can be easily utilized in the case of linear current transducers. It is shown how CTs cannot be considered linear transducers and how the higher the …
Blood Transfusion Management for Patients Treated With Anti-CD38 Monoclonal Antibodies
2018
Daratumumab has proven to be highly efficacious for relapsed and refractory multiple myeloma (MM) and has recently been approved in the frontline setting for MM patients ineligible for transplantation. In the future, expanded indications are possible for daratumumab and other anti-CD38 monoclonal antibodies in development. For several years, it has been recognized that these therapies interfere with blood bank testing by binding to CD38 on red blood cells and causing panagglutination on the Indirect Antiglobulin Test. This can lead to redundant testing and significant delays in patient care. Given the anticipated increase in utilization of anti-CD38 monoclonal antibodies, as well as the tra…
Monitoring the quality of the hospital pharmacoterapeutic process by sentinel patient program
2018
To analyze the results of sentinel patient program to monitoring the quality pharmacoterapeutic process in the hospitalized patient through medication errors.Design: Observational, prospective and transversal study. Ambit: General hospital of 1,000 beds.From May 2011 to June 2016. Sample: Patients with treatment prescribe within 24 hours of being admitted with 4 or more medications.Medication error, drugs prescribed, medications and doses dispensing, drugs administered. Safety indicators were defined based on medication errors at each stage of the pharmacotherapeutic process.Of the 746 patients studied, 334 had at least 1 medication error (44.8%; IC95%: 41.7-47.8). In the 746 treatm…
FMEA - BASIC CONCEPT IN PRODUCT QUALITY
2018
Failure modes and effects analysis (FMEA) is a systematic procedure for analyzing a system (the entire system or just an assembly, subassembly or component) to identify potential failure modes, causes and effects of each failure on system operation. A somewhat different definition was formulated by Goddard Space Flight Center (USA) : FMEA is a procedure whereby every credible way of defeating each item from the lower decomposition level to the highest level is analyzed to determine effects on the system and classify each potential way of failure according to the severity of its effect.
Surgical learning and guidance on operative risks and potential errors
2017
Purpose Within the framework of learning from errors, this study focused on how operative risks and potential errors are addressed in guidance to surgical residents during authentic surgical operations. The purpose of this paper is to improve patient safety and to diminish medical complications resulting from possible operating errors. Further in the process of the optimal contexts for instruction aimed at preventing risks and errors in the practical hospital environment was evaluated. Design/methodology/approach The five authentic surgical operations were analyzed, all of which were organized as training sessions for surgical residents. The data (collected via video-recoding) were analyze…
Estimation of linear errors-in-variable models with error free covariates: a backfitting approach
2008
We present a backfitting algorithm to estimate linear regression mod- els having both error-prone and error-free covariates as predictors. The algorithm assumes that the variance-ratios are known, and it is particulary efficient when several explanatory variables are included. The resulting estimators are shown to be unbiased and to perform well as compared to method-of-moments estimators which are usually employed when the variance ratio is known.
Effectiveness of tDCS at Improving Recognition and Reducing False Memories in Older Adults
2021
Background: False memories tend to increase in healthy and pathological aging, and their reduction could be useful in improving cognitive functioning. The objective of this study was to use an active–placebo method to verify whether the application of transcranial direct current stimulation (tDCS) improved true recognition and reduced false memories in healthy older people. Method: Participants were 29 healthy older adults (65–78 years old) that were assigned to either an active or a placebo group