Search results for "reliability"

Assessment of Organizational Trust: Preliminary Data for Romanian Adaptation of the Organizational Trust Inventory Short Form

2013

Abstract In the last years, trust became an important variable in regard to the well-being of organizations. In Romania, it was included in studies as a variable but there are few instruments that measure organizational trust. Therefore I identify a necessity for developing instruments useful in assessing and promoting any organizational adjustments. This paper presents the preliminary data obtained in the process of adaptation of OTI for the Romanian population. In doing so, we followed the guidelines of ITC. Using a sample of 108 employees the psychometric results show that OTI-RO has a high level of internal consistency reliability (a = 0.94) and it can be used exclusive for equivalent p…

2019

The Trier Inventory for Chronic Stress (TICS), consisting of 57 items, is an instrument for measuring chronic stress in nine areas. There is also a short form (SSCS) of the TICS consisting of 12 items. However, this 12-item short form does not include all nine areas of the theoretical model and the long version. Therefore, a short version including all nine scales/areas was investigated. The TICS was taken by a sample of N = 2,473 respondents from the general population, aged 14 to 99, selected by random-route sampling. Confirmatory factor analyses applying robust maximum likelihood estimations (MLM) tested the model fit. The one-factor-model proposed by the original authors was tested, and…

Validation of the Multidimensional Driving Style Inventory (MDSI) in professional drivers: How does it work in transportation workers?

2019

Abstract The Multidimensional Driving Style Inventory or MDSI constitutes, perhaps, the most relevant tool for measuring driving styles. Since its releasing in 2004, it has been applied worldwide to different samples of drivers, showing an important value and utility for road safety. However, empirical studies using the MDSI on professional drivers are scarce and, to the date, there is no validated version of the instrument in this workforce yet. Objectives: This study had two aims. First, to describe in detail the validation of the Taubman-Ben-Ari’s MDSI among professional drivers and, second, to test its convergent validity with other key relevant factors present in the work environment o…

Method effects associated with negative worded items in the 29 items spanish version of Ryff's Well-being Scales

2018

Aim Although they have been frequently used in the literature, there has been much confusion concerning Ryff’s Well-being Scales, such as their factor structure and the effects of method due to the use of reversed items. A common practice nowadays is the use of positively worded items and reversed forms, in order to reduce response bias. However, in many different studies have been seen that this practice introduce method effects in the scores, leading to problems of reliability and validity. This work had two goals: first, to verify the factor structure of the 29-item Spanish version of the original Ryff’s Well-being Scale in an athlete population, and second, to determine whether the meth…

Eine Kurzversion des Brief Symptom Inventory (BSI-25-F) zum Einsatz bei Gefangenen im Langzeitstrafvollzug in Europa

2014

Strafgefangene sind im Vergleich zur Allgemeinbevölkerung deutlich höher psychisch belastet und stärker suizidgefährdet. Die forensisch-psychologische Diagnostik kann jedoch zumeist nicht auf validierte Testverfahren zurückgreifen. Das kann negative Konsequenzen für Interventionen und somit für das Rückfallrisiko von Straftätern haben. Die vorliegende Studie extrahiert aus dem Brief Symptom Inventory 53 (BSI-53), das bei 1001 Langzeitstrafgefangenen (Mindestfreiheitsentzug 5 Jahre) in 11 europäischen Ländern eingesetzt wurde, eine Kurzversion mit 25 Items. Die vier Skalen Einsamkeit/Depressivität, Körperliche Beschwerden, Selbstwert/Minderwertigkeit und Herausforderndes Verhalten/Aggressiv…

Benchmark study of undrained triaxial testing of Opalinus Clay shale: Results and implications for robust testing

2021

Triaxial testing of argillaceous rocks and shales is significantly more challenging than conventional rock mechanical testing. The challenges are mainly related to the very low permeability of these geomaterials, and their sensitivity to exposure of atmosphere and brines, which induces variations of water content, suction and effective stress. There are currently no international standards to guide service laboratories for robust testing procedures for shales. A benchmark study of undrained triaxial testing was therefore initiated with three leading service laboratories in shale testing, performing 13 tests and using two different methods of establishing sample saturation prior to deformati…

Source unreliability decreases but does not cancel the impact of social information on metacognitive evaluations

2015

International audience; Through metacognitive evaluations, individuals assess their own cognitive operations with respect to their current goals. We have previously shown that non-verbal social cues spontaneously influence these evaluations, even when the cues are unreliable. Here, we explore whether a belief about the reliability of the source can modulate this form of social impact. Participants performed a two-alternative forced choice task that varied in difficulty. The task was followed by a video of a person who was presented as being either competent or incompetent at performing the task. That person provided random feedback to the participant through facial expressions indicating ag…

Optimal matching between optical rectennas and harvester circuits

2017

This paper deals with optimal coupling issues between rectennas and harvesting circuits. An optical rectenna consists of a nanoantenna usually coupled with an ultra-high speed rectifier. These devices aim to receive and convert solar and thermal radiation in a DC voltage, while a harvester circuit provides the energy to be stored. The rectenna impedance is influenced both by its structure and by the rectifying diode, the harvester circuit impedance has to be matched to optimize the power transfer. The purpose of this contribution is to discuss the best impedance conditions by taking into account the constraints that are due to the individual devices the conversion system consist of. Finally…

A multi-input, single-inductor power system for multisource energy harvesting

2013

Today, energy harvesting is drawing a great deal of attention due to modern trends in energy saving and sustainable development purposes. Among renewable energy sources fuel cells and photovoltaic arrays are the most promising for a wide variety of applications, ranging from few mWatts of wireless sensor networks to kWatts for household appliances. Coupling several harvesters and renewable sources is the winning strategy to ensure a proper supply overcoming the uncertainty and limited availability of common harvesters and renewable sources. Multisource energy harvesting is actually an open research topic involving several pressing and often conflicting requirements. System cost, complexity,…

Development of an individualized familiarization method for vertical jumps

2013

OBJETIVO: Propor um método de familiarização individualizado para saltos verticais e verificar o seu efeito na variabilidade intrassujeito. MÉTODOS: Cinquenta e três homes (média ± DP; idade 23,5 ± 3,3 anos; estatura 1,76 ± 0,08 m; massa 72,8 ± 8,6 kg; percentual de gordura 12,9 ± 5,2%) realizaram sucessivos saltos até atingir o nível de estabilidade proposto. Após 48 h este processo era repetido e a estabilidade entre dias era verificada, se necessário, mais sessões eram realizadas. O nível de estabilidade foi determinado por um teste z, com intervalo de confiança de 95%. Após o processo de familiarização, duas sessões experimentais adicionais foram realizadas para determinar a confiabilid…