Cognitive Factors Mediate the Relation Between Age and Flight Path Maintenance in General Aviation

2016 ◽  
Vol 6 (2) ◽  
pp. 81-90 ◽  
Author(s):  
Kathleen Van Benthem ◽  
Chris M. Herdman
Keyword(s):  
Cognitive Functioning ◽  
Flight Path ◽  
General Aviation ◽  
Cognitive Factors ◽  
Pilot Performance ◽  
Pilot Error ◽  
Age Related ◽  
And Performance ◽  
Relationship Of ◽  
The Relationship

Abstract. Identifying pilot attributes associated with risk is important, especially in general aviation where pilot error is implicated in most accidents. This research examined the relationship of pilot age, expertise, and cognitive functioning to deviations from an ideal circuit trajectory. In all, 54 pilots, of varying age, flew a Cessna 172 simulator. Cognitive measures were obtained using the CogScreen-AE ( Kay, 1995 ). Older age and lower levels of expertise and cognitive functioning were associated with significantly greater flight path deviations. The relationship between age and performance was fully mediated by a cluster of cognitive factors: speed and working memory, visual attention, and cognitive flexibility. These findings add to the literature showing that age-related changes in cognition may impact pilot performance.

Somatic Responses and Performance Levels during Anticipatory Physical-Threat Stress

1968 ◽  
Vol 27 (2) ◽  
pp. 539-552 ◽  
Author(s):  
Barbara L. Drinkwater ◽  
M. Marilyn Flint ◽  
Troy S. Cleland
Keyword(s):  
Action Potentials ◽  
General Aviation ◽  
Curvilinear Relationship ◽  
Blink Rate ◽  
Physical Threat ◽  
Two Measures ◽  
And Performance ◽  
Relationship Of ◽  
The Relationship ◽  
Aviation Pilots

20 general aviation pilots flew a series of simulated instrument flights under stress and non-stress conditions. During flight, muscle action potentials from the masseter muscle and eye blink were monitored. The relationship of these two measures of somatic activity to each other and to performance scores was determined on an inter- and intra-individual basis. Both linear and curvilinear coefficients were computed. Levels of somatic activity rose significantly from the control to stress flight. Individual reliability of blink rate and intra-individual reliability of masseter activity and blink rate were significant across flights. A significant curvilinear relationship was present between blink rate and masseter tension. In general, performance errors were fewer in those Ss with lower levels of somatic tension and during flight sectors in which masseter activity was low or moderate. High error scores were found in those sectors in which blink rate was low or moderate.

The relationship between the age of Schistosoma mansoni cercariae and their ability to penetrate and infect the mammalian host

Parasitology ◽  
1983 ◽  
Vol 87 (3) ◽  
pp. 481-492 ◽  
Author(s):  
J. Ruth Lawson ◽  
R. A. Wilson
Keyword(s):  
Schistosoma Mansoni ◽  
Stratum Corneum ◽  
Mass Mortality ◽  
Mammalian Host ◽  
Energy Reserves ◽  
Age Related ◽  
Abdominal Route ◽  
Relationship Of ◽  
The Relationship ◽  
Related Mortality

SummaryThe ability of the cercariae of Schistosoma mansoni to penetrate the tails of mice was shown to remain constant throughout their lives. However, their capacity to establish themselves and then reach maturity decreased as they aged. The abdominal route of penetration produced consistently higher maturation rates than the tail route. Significantly different maturation rates were obtained by modifying the standard tail infection technique. Evidence is presented that age-related mortality of schisto-somula occurs within 24 h of penetration and may be associated with the exhaustion of energy reserves during the penetration of the stratum corneum. The relationship of this age-related mortality to ‘mass mortality’ is discussed.

SET UP FOR GROWTH? — AN EXPLORATORY ANALYSIS OF THE RELATIONSHIP OF GROWTH INTENTION AND BUSINESS MODELS

2015 ◽  
Vol 19 (06) ◽  
pp. 1540009 ◽  
Author(s):  
SARAH MAHDJOUR
Keyword(s):  
Business Models ◽  
Theory Of The Firm ◽  
Past Research ◽  
Business Owners ◽  
Competitive Strategies ◽  
Consulting Services ◽  
And Performance ◽  
Set Up ◽  
Relationship Of ◽  
The Relationship

What do growth-oriented business models look like? While several economic theories, such as the theory of the firm, are based on the assumption that firms aim to maximise their profits, past research has shown that growth intention is heterogeneous among firms and that many business owners prefer to keep their firm at a size that they can manage with few resources. This paper explores the relationship of growth intention and business models, based on a sample of 135 German ICT businesses. Following an exploratory approach, Mann–Whitney U tests are applied to analyse how different business model designs correspond with different levels of growth intention. The results indicate that growth intention relates to business owners’ decisions regarding the provision of consulting services, the level of standardisation in offered products and services, the choice of addressed markets, the implementation of competitive strategies based on cost efficiency and of revenue streams based on one-time- and performance-based payments. Furthermore, the results show that growth oriented firms are no more likely than non-growth oriented firms to adapt their business models dynamically to changed internal or external conditions.

Organizational Support for Professionalism, Organizational Citizenship Behavior (OCB), and Performance

2021 ◽  
Vol 10 (1) ◽  
pp. 1-12
Author(s):  
Noviana Norrohmat ◽  
Umar Nimran ◽  
Kusdi Raharjo ◽  
Hamidah Nayati Utami ◽  
Endang Siti Astuti
Keyword(s):  
Organizational Citizenship ◽  
Organizational Citizenship Behavior ◽  
Organizational Support ◽  
Citizenship Behavior ◽  
Research Approach ◽  
The Difference ◽  
And Performance ◽  
Relationship Of ◽  
Descriptive Survey ◽  
The Relationship

The purpose of this research is to determine the organizational support for professionalism that has never been done before. The research approach is to conceptualize the structure of the relationship of variables from a study. Verification research is to test the hypothesis through data collection in the field using two methods, namely descriptive survey and explanatory survey. The use of both methods aims to analyze the causality relationship between research variables in accordance with the hypothesis quantitatively. There is significant influence between the variables of organizational support to professional variables. However, different results are found on the influence of organizational support variables on OCB and performance that have no significant effect. There is also an indirect influence between organizational support variables on OCB and performance through intermediary intervening professionalism variables. The difference between this research and the previous research are the use of constructs and the measurement in the unit of analysis being used.

Including Neither-Type in the Morningness-Eveningness Dimension Decreases the Robustness of the Model

1993 ◽  
Vol 77 (1) ◽  
pp. 243-254 ◽  
Author(s):  
Helena Almirall
Keyword(s):  
Verbal Memory ◽  
Index Finger ◽  
Axillary Temperature ◽  
Men 2 ◽  
Auditory Reaction Time ◽  
And Performance ◽  
Type 3 ◽  
Relationship Of ◽  
The Relationship ◽  
Reduced Scale

The present paper is a study of axillary temperature and performance during the waking part of the day and the relationship of these two variables to Morningness-Eveningness preferences. A reduced scale of the Home and Östberg questionnaire was adapted and standardized for the Spanish population, and 3 groups of subjects were formed (Morning-types: 3 men, 2 women; Neither-type: 3 men, 6 women; Evening-types: 1 man, 4 women). Three different tasks were tested, auditory reaction time (to measure alertness and speed), index finger tapping (motor skill), and verbal memory (information processing). The subjects were tested hourly in 13 sessions spread out over the day. Morningness-Eveningness preference groups did not differ in temperature and performance. Neither-type subjects did not present values intermediate between those of the Morning- and Evening-types.

scholarly journals Derivation and Performance of Standardized Enhanced Liver Fibrosis (ELF) Test Thresholds for the Detection and Prognosis of Liver Fibrosis

2019 ◽  
Vol 3 (5) ◽  
pp. 815-826 ◽  
Author(s):  
James Day ◽  
Preya Patel ◽  
Julie Parkes ◽  
William Rosenberg
Keyword(s):  
Liver Fibrosis ◽  
Delphi Panel ◽  
Test Results ◽  
Hazard Ratios ◽  
Test Thresholds ◽  
And Performance ◽  
Using Data ◽  
Relationship Of ◽  
The Relationship ◽  
Selection Of

Abstract Introduction Noninvasive tests are increasingly used to assess liver fibrosis and determine prognosis but suggested test thresholds vary. We describe the selection of standardized thresholds for the Enhanced Liver Fibrosis (ELF) test for the detection of liver fibrosis and for prognostication in chronic liver disease. Methods A Delphi method was used to identify thresholds for the ELF test to predict histological liver fibrosis stages, including cirrhosis, using data derived from 921 patients in the EUROGOLF cohort. These thresholds were then used to determine the prognostic performance of ELF in a subset of 457 patients followed for a mean of 5 years. Results The Delphi panel selected sensitivity of 85% for the detection of fibrosis and >95% specificity for cirrhosis. The corresponding thresholds were 7.7, 9.8, and 11.3. Eighty-five percent of patients with mild or worse fibrosis had an ELF score ≥7.7. The sensitivity for cirrhosis of ELF ≥9.8 was 76%. ELF ≥11.3 was 97% specific for cirrhosis. ELF scores show a near-linear relationship with Ishak fibrosis stages. Relative to the <7.7 group, the hazard ratios for a liver-related outcome at 5 years were 21.00 (95% CI, 2.68–164.65) and 71.04 (95% CI, 9.4–536.7) in the 9.8 to <11.3 and ≥11.3 subgroups, respectively. Conclusion The selection of standard thresholds for detection and prognosis of liver fibrosis is described and their performance reported. These thresholds should prove useful in both interpreting and explaining test results and when considering the relationship of ELF score to Ishak stage in the context of monitoring.

scholarly journals Green CSR Moderated by Public Visibility and Innovation Performance at Indonesia Companies

2020 ◽  
Vol 24 (1) ◽  
pp. 1
Author(s):  
Rahmat Hidayat, Farah Margaretha Leon
Keyword(s):  
Positive Relationship ◽  
Negative Relationship ◽  
Innovation Performance ◽  
Manufacturing Companies ◽  
Innovation Activities ◽  
And Performance ◽  
Relationship Of ◽  
The Relationship

This study aims to analyze the green CSR  of innovation performance  with firms approval variables  and public visibility   can support moderating the relationship of green CSR  and innovation. The research sample was 33 manufacturing companies. The results showed that the  green CSR has a positive and significant effect on innovation . Also, the company approval variable has been proven to moderate the direction of a positive relationship between green CSR and innovation . The results also prove that public visibility is proven to moderate the direction of the negative relationship between green CSR and performance. This study provide information that shows great concern for the environment; it will increase the company in making changes through innovation activities. Also, the higher the company's approval and public visibility, the company will get support from various stakeholders to run the firms. The level of company concern for CSR activities will be a misjudgment for investors.

scholarly journals Pengaruh Kompensasi Finansial Terhadap Kinerja Karyawan Pada PT Penggadaian (Persero) Cabang Jambi

2020 ◽  
Vol 5 (2) ◽  
pp. 209
Author(s):  
Fadil Iskandar
Keyword(s):  
Statistical Tests ◽  
Financial Compensation ◽  
Independent Variables ◽  
Correlational Research ◽  
Dependent Variables ◽  
And Performance ◽  
Relationship Of ◽  
The Relationship ◽  
Descriptive Method ◽  
Variable Performance

This research aims to find out how implementation of the financial compensation and performance job of PT Penggadaian (Persero) Branch  of Jambi. Next also to analyze implamentation and how the influence of financial compensation on performance job in PT Penggadaian (Persero) of Banch Jambi. This research uses descriptive method quantitative correlational research with the form that describes the relationship of independent variables with dependent variables. The research on the analysis tools using simple regression with hypothesis prove with statistical tests t. The results showed that a significant effect on performance financial compensation of performance job which are characterized by tcount > ttable and Prog. sig < α (0.05). While the correlation value i.e. 64% of these mean that have relationship very closely between financial compensation variables with variable performance job.

scholarly journals Adolescent to young adult longitudinal development of subcortical volumes in two European sites with four waves

2021 ◽  
Author(s):  
Lea L. Backhausen ◽  
Juliane H. Froehner ◽  
Herve Lemaitre ◽  
Eric Artiges ◽  
Marie-Laure Paillere-Martinot ◽  
...  
Keyword(s):  
Sex Differences ◽  
Brain Development ◽  
Adolescent Psychopathology ◽  
Control Procedure ◽  
Structural Development ◽  
Age Related ◽  
Subcortical Regions ◽  
Relationship Of ◽  
First Time ◽  
The Relationship

Adolescent subcortical structural brain development might underlie psychopathological symptoms, which often emerge in adolescence. At the same time, sex differences exist in psychopathology, which might be mirrored in underlying sex differences in structural development. However, previous studies showed inconsistencies in subcortical trajectories and potential sex differences. Therefore, we aimed to investigate the subcortical structural trajectories and their sex differences across adolescence using for the first time a single cohort design, the same quality control procedure, software and a general additive mixed modeling approach. We investigated two large European sites from ages 14 to 24 with 503 participants and 1408 total scans from France and Germany as part of the IMAGEN project including four waves of data acquisition. We found significantly larger volumes in males versus females in both sites and across all seven subcortical regions. Sex differences in age-related trajectories were observed across all regions in both sites. Our findings provide further evidence of sex differences in longitudinal adolescent brain development of subcortical regions and thus might eventually support the relationship of underlying brain development and different adolescent psychopathology in boys and girls.

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