Search results for "Testing"

Dynamic Test Methods for COTS SRAMs

2014

International audience; In previous works, we have demonstrated the importance of dynamic mode testing of SRAM components under ionizing radiation. Several types of failures are difficult to expose when the device is tested under static (retention) mode. With the purpose of exploring and defining the most complete testing procedures and reveal the potential hazardous behaviors of SRAM devices, we present novel methods for the dynamic mode radiation testing of SRAMs. The proposed methods are based on different word address accessing schemes and data background: Fast Row, Fast Column, Pseudorandom, Adjacent (Gray) and Inverse Adjacent (Gray). These methods are evaluated by heavy ion and atmos…

P-Value, Confidence Intervals, and Statistical Inference: A New Dataset of Misinterpretation

2017

Statistical inference is essential for science since the twentieth century (Salsburg, 2001). Since it's introduction into science, the null hypothesis significance testing (NHST), in which the P-value serves as the index of “statistically significant,” is the most widely used statistical method in psychology (Sterling et al., 1995; Cumming et al., 2007), as well as other fields (Wasserstein and Lazar, 2016). However, surveys consistently showed that researchers in psychology may not able to interpret P-value and related statistical procedures correctly (Oakes, 1986; Haller and Krauss, 2002; Hoekstra et al., 2014; Badenes-Ribera et al., 2016). Even worse, these misinterpretations of P-value …

Commentary: Psychological Science's Aversion to the Null

2017

The Agony of Choice: Acceptance, Efficiency, and Psychometric Properties of Questionnaires With Different Numbers of Response Options

2021

Questionnaires are one of the most important tools in psychological assessment, yet the impact of different numbers of response options on psychometric properties of questionnaires is limited. This study extends existing research by analyzing respondents’ acceptance of and the efficiency of different numbers of response options and replicate findings on reliability and validity. We studied these questions in 540 respondents who filled out the Big Five Inventory–2 and the Emotion Regulation Questionnaire. Two response options, 11 response options and the visual analog scale showed disadvantages in acceptance compared with the original number of response options. The completion time increase…

Work-home interaction from a work psychological perspective: Development and validation of a new questionnaire, the SWING

2005

Contains fulltext : 54536.pdf (Publisher’s version ) (Closed access) This paper reports on the stepwise development of a new questionnaire for measuring work-home interaction, i.e. the Survey Work-home Interaction—NijmeGen, the SWING). Inspired by insights from work psychology, more specifically from Effort-Recovery Theory (Meijman & Mulder, 1998), we defined work-home interaction by differentiating between the direction and quality of influence. Four types of work-home interaction were distinguished and measured by using 22 (including 13 self-developed) items. By using data from five independent samples (total N=2472), validity evidence was provided based on the internal structure of the q…

Cardiorespiratory Fitness and Physical Activity following Lung Transplantation: A National Cohort Study

2020

<b><i>Background:</i></b> Low cardiorespiratory fitness and inactivity are common after lung transplantation (LTx). The causes of exercise intolerance are incompletely understood. <b><i>Objectives:</i></b> The aim of this study was to objectively assess cardiorespiratory fitness and physical activity, evaluate causes of exercise intolerance, and explore clinical factors associated with cardiorespiratory fitness after bilateral LTx (BLTx). <b><i>Materials and Methods:</i></b> Peak oxygen uptake (V<b>∙</b>O<sub>2peak</sub>) and exercise-limiting factors were evaluated by a treadmill cardiopulmonary…

Evolution of Functional Exercise Capacity in Lung Transplant Patients With and Without Bronchiolitis Obliterans Syndrome: A Longitudinal Case-Control…

2019

Introduction: Bronchiolitis Obliterans Syndrome (BOS) is a debilitating disease with limited treatment options that threatens both the quality of life and long-term survival of lung transplant (LTx) recipients. This retrospective longitudinal case-control study was performed to compare the long-term functional evolution of LTx recipients with and without BOS. Methods: Twenty-four LTx recipients with BOS (BOS=Cases) and 24 without BOS (NON-BOS=Controls) were selected and individually matched according to age, gender, diagnosis and LTx characteristics. Measurements of 6-minute walking distance (6MWD), symptoms of dyspnea (BORG CR-10 scale), and comprehensive pulmonary function testing were pe…

Paired Inspiratory/Expiratory Volumetric Thin-Slice CT Scan for Emphysema Analysis

2005

Purpose: The aim of the study was to use three-dimensional high-resolution CT scan data sets in inspiration and expiration for the quantitative evaluation of emphysema. Using an advanced dedicated semiautomatic analysis tool, the functional inspiratory/expiratory shifts of emphysema volume and clusters were quantified. The pulmonary function test (PFT) served as the clinical “gold standard.” Materials and methods: Thirty-one patients (9 women and 22 men; mean [± SD] age, 60 ± 8 years) who had severe emphysema due to COPD (Global Initiative for Chronic Obstructive Lung Disease [GOLD] class III and IV) were included in the study. All patients underwent paired inspiratory/expiratory multidetec…

FEV1 Predicts Cardiac Status and Outcome in Chronic Heart Failure

2022

Background COPD is an established predictor of clinical outcome in patients with chronic heart failure (HF). However, little evidence is available about the predictive value of FEV1 in chronic HF. Research Question Is pulmonary function related to the progression of chronic HF? Study Design and Methods The MyoVasc study ( ClinicalTrials.gov Identifier: NCT04064450) is a prospective cohort study of HF. Information on pulmonary and cardiac functional and structural status was obtained by body plethysmography and echocardiography. The primary study end point was worsening of HF. Results Overall 2,998 participants (age range, 35-84 years) with available FEV1 data were eligible for analysis. Lin…

Efficacy of Mechanical Insufflation-Exsufflation in Medically Stable Patients With Amyotrophic Lateral Sclerosis

2004

Objective: To determine under what circumstances the use of mechanical insufflation-exsufflation (MI-E) can generate clinically effective expiratory flows for airway clearance (> 2.7 L/s) for clinically stable patients with amyotrophic lateral sclerosis (ALS). Materials and method: Twenty-six consecutive patients with ALS were studied, 15 with severe bulbar dysfunction. Using a pneumotachograph and with the aid of an oronasal mask, we measured FVC, FEV1, peak cough flow (PCF), maximum insufflation capacity (MIC), PCF generated from a maximum insufflation MIC (PCFMIC), and PCF generated by MI-E (PCFMI-E). MI-E was delivered at 40 cm H2O. Maximum inspiratory pressure (PImax) and maximum expir…