Soil Variability and Collecting a Representative Sample

Crops & Soils ◽  
2021 ◽  
Author(s):  
Robert O. Miller
Keyword(s):  
Representative Sample ◽  
Soil Variability

Automation Surprise

2017 ◽  
Vol 7 (1) ◽  
pp. 28-41 ◽  
Author(s):  
Robert J. de Boer ◽  
Karel Hurts
Keyword(s):  
Flight Control ◽  
Representative Sample ◽  
Aviation Safety ◽  
Control Mode ◽  
Cognitive Errors ◽  
Laboratory Studies ◽  
Airline Pilots ◽  
Flight Operations ◽  
Widespread Phenomenon ◽  
Few Data

Abstract. Automation surprise (AS) has often been associated with aviation safety incidents. Although numerous laboratory studies have been conducted, few data are available from routine flight operations. A survey among a representative sample of 200 Dutch airline pilots was used to determine the prevalence of AS and the severity of its consequences, and to test some of the factors leading to AS. Results show that AS is a relatively widespread phenomenon that occurs three times per year per pilot on average but rarely has serious consequences. In less than 10% of the AS cases that were reviewed, an undesired aircraft state was induced. Reportable occurrences are estimated to occur only once every 1–3 years per pilot. Factors leading to a higher prevalence of AS include less flying experience, increasing complexity of the flight control mode, and flight duty periods of over 8 hr. It is concluded that AS is a manifestation of system and interface complexity rather than cognitive errors.

Association of Physical Morbidity and Health-Related Quality of Life in a Representative Sample of Older German People

2018 ◽  
Vol 25 (4) ◽  
pp. 140-151
Author(s):  
Markus A. Wirtz ◽  
Matthias Morfeld ◽  
Elmar Brähler ◽  
Andreas Hinz ◽  
Heide Glaesmer
Keyword(s):  
Quality Of Life ◽  
Representative Sample ◽  
Short Form ◽  
Physical Symptoms ◽  
German Population ◽  
Health Related Quality ◽  
Patient Reported ◽  
Related Quality ◽  
Health Related

Abstract. The association between health-related quality of life (HRQoL; Short-Form Health Survey-12; SF-12) and patient-reported morbidity-related symptoms measured by the Patient Health Questionnaire-15 (PHQ-15) is analyzed in a representative sample of older people in the general German population. Data from 1,659 people aged 60 to 85 years were obtained. Latent class analysis identified six classes of patients, which optimally categorize clusters of physical symptoms the participants reported: musculoskeletal impairments (39.8%), healthy (25.7%), musculoskeletal and respiratory/cardiac impairments (12.8%), musculoskeletal and respiratory impairments, along with bowel and digestion problems (12.9%), general impairments (4.9%), and general impairments with no bowel and digestion problems (4.8%). The participants’ SF-12 Physical Health Scores (η2 = .39) and their Mental Health Scores (η2 = .28) are highly associated with these latent classes. These associations remain virtually identical after controlling for age. The results provide evidence that profiles of patient-reported physical impairments correspond strongly with reduced HRQoL independently from aging processes.

Representative Sample of Basic Methods

1967 ◽  
Vol 12 (10) ◽  
pp. 514, 516
Author(s):  
SACHIO ASHIDA
Keyword(s):  
Representative Sample

A Representative Sample of Youths

1991 ◽  
Vol 36 (9) ◽  
pp. 774-775
Author(s):  
W. William Minor
Keyword(s):  
Representative Sample

Nicotine Dependence as a Mediator Between Insomnia and PTSD Among a Nationally Representative Sample

2007 ◽  
Author(s):  
Kimberly Babson ◽  
Casey Trainor ◽  
Matthew Feldner ◽  
Natalie Sachs- Ericsson ◽  
Norman Schmidt ◽  
...  
Keyword(s):  
Nicotine Dependence ◽  
Representative Sample ◽  
Nationally Representative
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