Use of a modified delphi process for establishing occupational exposure limits in support of health surveillance for space travelers

On-orbit exposures can come from numerous factors related to the space environment as evidenced by almost 50 years of environmental samples collected for water analysis, air analysis, radiation analysis, and physiologic parameters. For astronauts and spaceflight participants the occupational exposures can be very different from those experienced by workers performing similar tasks in workplaces on Earth, because the duration of the exposure could be continuous for very long orbital, and eventually interplanetary, missions. The establishment of long-term exposure standards is vital to controlling the quality of the spacecraft environment over long periods. NASA often needs to update and revise its prior exposure standards (Spacecrafts Maximum Allowable Concentrations (SMACs)). Traditional standards-setting processes are often lengthy, so a more rapid method to review and establish standards would be a substantial advancement in this area. This project investigates use of the Delphi method for this purpose. ^ In order to achieve the objectives of this study a modified Delphi methodology was tested in three trials executed by doctoral students and a panel of experts in disciplines related to occupational safety and health. During each test/trial modifications were made to the methodology. Prior to submission of the Delphi Questionnaire to the panel of experts a pilot study/trial was conducted using five doctoral students with the goals of testing and adjusting the Delphi questionnaire to improve comprehension, work out any procedural issues and evaluate the effectiveness of the questionnaire in drawing the desired responses. The remainder of the study consisted of two trials of the Modified Delphi process using 6 chemicals that currently have the potential of causing occupational exposures to NASA astronauts or spaceflight participants. To assist in setting Occupational Exposure Limits (OEL), the expert panel was established consisting of experts from academia, government and industry. Evidence was collected and used to create close-ended questionnaires which were submitted to the Delphi panel of experts for the establishment of OEL values for three chemicals from the list of six originally selected (trial 1). Once the first Delphi trial was completed, adjustments were made to the Delphi questionnaires and the process above was repeated with the remaining 3 chemicals (trial 2). ^ Results indicate that experience in occupational safety and health and with OEL methodologies can have a positive effect in minimizing the time experts take in completing this process. Based on the results of the questionnaires and comparison of the results with the SMAC already established by NASA, we conclude that use of the Delphi methodology is appropriate for use in the decision-making process for the selection of OELs.^

Methode pour apprendre facilement la geographie ... ; [tome premier -deuxieme]

Tit. en antep.: "... contenant un abbregé de la sphere, la diuision de la terre en ses continents, Empires, Royaumes, Etats, Republiques, Provinces, etc... et un traité de la nauigation ... diuisée en deux tomes ; tome premier"

Delphi study for the design and validation of a questionnaire about digital competences in higher education

The study of digital competence remains an issue of interest for both the scientific community and the supranational political agenda. This study uses the Delphi method to validate the design of a questionnaire to determine the perceived importance of digital competence in higher education. The questionnaire was constructed from different framework documents in digital competence standards (NETS, ACLR, UNESCO). The triangulation of non-parametric techniques made it possible to consolidate the results obtained through the Delphi panel, the suitability of which was highlighted through the expert competence index (K). The resulting questionnaire emerges as a good tool for undertaking future national and international studies on digital competence in higher education.

A national e-Delphi towards the measurement of safe medication practices in Portuguese hospitals

Objectives To determine the face and content validity of items for measuring safe medication practices in Portuguese hospitals. Methods 128 items were drafted from content analysis of existing questionnaires and the literature, employing preferred terms of the WHO International Classification for Patient Safety (Portuguese version). A two-round e-Delphi was convened, using a purposive multidisciplinary panel. Hospital-based experts were asked to rate the relevance of items on a 7-point Likert scale and to comment on their clarity and completeness. Results The response rate was similar in both rounds (70.3% and 73.4%, respectively). In the first round 91/128 (71.1%) items reached the predefined level of positive consensus. In the second round 23 additional items reached positive consensus, as well as seven items newly derived by the panel. Conclusions Most items have face and content validity, indicating relevance and clarity, and can be included in a future questionnaire for measuring safe medication practices in Portuguese hospitals.

System und methode der harmonielehre, gegründet auf fremde und eigene beobachtungen, mit besonderer berücksichtigung der neuesten physikalisch-physiologischen untersuchungen über tonempfindungen,

Mode of access: Internet.

Beschreibung der Gemälde des Polygnotos von Thasos in der Lesche zu Delphi /

Mode of access: Internet.

Sachs-Villatte enzyklopädisches französisch-deutsches und deutsch-französisches Wörterbuch : mit Angabe der Aussprache nach dem phonetischen System der Methode Toussaint-Langenscheidt = Sachs-Villatte dictionnaire encyclopédique français-allemand et allemand-français : indiquant la pronunciation d'après le système phonétique de la Méthode Toussaint-Langenscheidt /

Advertisements: 16 p. after text (of both volumes).

Reinigung von Kanalisationswässern nach der Methode des Dr. Petri.

"D. R. P. No. 19098."

Muret-Sanders Enzyklopädisches englisch-deutsches und deutsch-englisches Wörterbuch, mit Angabe der Aussprache nach dem phonetischen System der Methode Toussaint-Langenscheidt. Hand- und Schulausgabe.

Added t. p., in English, with imprint: London, Grevel; New York, International News Co.