Aircraft Weight Analysis

2022 ◽  
pp. 147-196
Author(s):  
Snorri Gudmundsson
Keyword(s):  
Weight Analysis

Differential Importance of Performance Dimensions: A Relative Weight Analysis

2012 ◽  
Author(s):  
Vanessa M. Lammers ◽  
Deborah Lee ◽  
Jenna C. Cox ◽  
Kathleen Frye ◽  
Jeffrey R. Labrador ◽  
...  
Keyword(s):  
Relative Weight ◽  
Weight Analysis ◽  
Performance Dimensions ◽  
Relative Weight Analysis

Circadian blood pressure and heart rate rhythms in mice

1999 ◽  
Vol 276 (2) ◽  
pp. R500-R504 ◽  
Author(s):  
Ping Li ◽  
Steven H. Sur ◽  
Ralph E. Mistlberger ◽  
Mariana Morris
Keyword(s):  
Heart Rate ◽  
Sampling Rate ◽  
Eating Patterns ◽  
Cardiovascular Parameters ◽  
C57bl Mice ◽  
Weight Analysis ◽  
Using Data ◽  
Computerized Monitoring ◽  
Carotid Arterial ◽  
Mean Heart Rate

The circadian pattern of mean arterial pressure (MAP) and heart rate (HR) was measured in C57BL mice with carotid arterial catheters. Cardiovascular parameters were recorded continuously with a computerized monitoring system at a sampling rate of 100 Hz. The tethered animals were healthy, showing stabilized drinking and eating patterns within 2 days of surgery and little loss of body weight. Analysis of the 24-h pattern of MAP and HR was conducted using data from 3–6 consecutive days of recording. A daily rhythm of MAP was evident in all mice, with group mean dark and light values of 101.4 ± 7.3 and 93.1 ± 2.9 mmHg, respectively. The group mean waveform was bimodal, with peak values evident early and late in the dark period, and a trough during the middle of the light period. The phase of maximum and minimum values showed low within-group variance. Mean heart rate was greater at night than during the day (561.9 ± 22.7 vs. 530.3 ± 22.3 beats/min). Peak values generally occurred at dark onset, and minimum values during the middle of both the dark and the light periods. We conclude that it is possible to perform measurements of circadian cardiovascular parameters in the mouse, providing new avenues for the investigation of genetic models.

scholarly journals Social Media Adoption, Usage And Impact In Business-To-Business (B2B) Context: A State-Of-The-Art Literature Review

2021 ◽  
Author(s):  
Yogesh K. Dwivedi ◽  
Elvira Ismagilova ◽  
Nripendra P. Rana ◽  
Ramakrishnan Raman
Keyword(s):  
Social Media ◽  
Media Use ◽  
State Of The Art ◽  
Relevant Literature ◽  
Comprehensive Analysis ◽  
Social Media Use ◽  
Weight Analysis ◽  
Social Media Tools ◽  
Use Of Social Media ◽  
Business To Business

AbstractSocial media plays an important part in the digital transformation of businesses. This research provides a comprehensive analysis of the use of social media by business-to-business (B2B) companies. The current study focuses on the number of aspects of social media such as the effect of social media, social media tools, social media use, adoption of social media use and its barriers, social media strategies, and measuring the effectiveness of use of social media. This research provides a valuable synthesis of the relevant literature on social media in B2B context by analysing, performing weight analysis and discussing the key findings from existing research on social media. The findings of this study can be used as an informative framework on social media for both, academic and practitioners.

An electron microscope study of kidney basement membrane changes in the mouse by lipoteichoic acid from Streptococcus pyogenes

1987 ◽  
Vol 33 (8) ◽  
pp. 709-717 ◽  
Author(s):  
Ofra Leon ◽  
Charles Panos
Keyword(s):  
Basement Membrane ◽  
Streptococcus Pyogenes ◽  
Membrane Damage ◽  
Lipoteichoic Acid ◽  
Poststreptococcal Glomerulonephritis ◽  
Membrane Morphology ◽  
Proximal Tubular ◽  
Weight Analysis ◽  
Membrane Changes ◽  
Almost All

Mice injected repeatedly, intraperitoneally or intravenously, for approximately 1 month with a total of 1.04 mg lipoteichoic acid from a nephritogenic strain of Streptococcus pyogenes lost weight. Analysis by electron microscopy revealed that they also exhibited extensive kidney changes in basement membrane morphology which resembled, in part, those observed in human poststreptococcal glomerulonephritis. For example, the glomerular basement membrane became electron dense and exhibited at least a twofold increase in width sporadically within the same preparation after exposure to lipoteichoic acid. Also, whereas appreciable loss or reduction in epithelial foot processes as a result of fusion was clearly evident, epithelial slits and slit membranes or diaphragms between normal foot processes were not selectively affected. In addition, another mostly thickened, highly coiled or serpentinelike basement membrane with amorphous nodules appeared in these preparations. This type membrane was not observed surrounding the capillary lumina and was the most pronounced abnormality apparent in almost all preparations from mice exposed to lipoteichoic acid. Likewise, the proximal tubular basement membrane became variable in width and increased in electron density in mice given lipoteichoic acid as compared with controls. In addition, this membrane was often punctuated with various morphological protrusions originating from only its thickened areas and which extended away from, and not into, the capillary space. This change was only associated with the basement membrane of the proximal tubular capillaries. All membrane changes persisted but gradually subsided, with normal kidney membrane morphology reappearing on the 4th day following the last injection of lipoteichoic acid. The use of mice and minute amounts of lipoteichoic acid to study membrane damage or change in the fine structure of the glomerular or proximal tubular areas at the immediate presymptomatic, and very early symptomatic, phase of streptococcal glomerulonephritis is noted.

Burnout, depressive symptoms, job demands and satisfaction with life: discriminant validity and explained variance

2016 ◽  
Vol 47 (1) ◽  
pp. 46-59 ◽  
Author(s):  
Cara Thuynsma ◽  
Leon T de Beer
Keyword(s):  
Depressive Symptoms ◽  
Discriminant Validity ◽  
Satisfaction With Life ◽  
Relative Weight ◽  
Job Demands ◽  
Health Concern ◽  
Unique Contribution ◽  
Convenience Sample ◽  
Weight Analysis ◽  
Relative Weight Analysis

Burnout is considered an occupational health concern. The burnout–depression overlap is an important area of research as the foundations of burnout and its diagnostic value have come under increasing scrutiny, calling for burnout to not be classified as an independent disorder but rather as a subtype of depression. Furthermore, as burnout is defined as a work-specific syndrome, workplace factors have been argued to be the major indicators of burnout. Recent research however, calls this into question. This study seeks to establish the overlap between burnout and depressive symptoms and to determine if burnout is in fact a multi-domain phenomenon. A cross-sectional research design was used, a convenience sample of educators from the Gauteng province of South Africa was collected ( N = 399). Confirmatory factor analysis was applied in a structural equation modelling framework. Discriminant validity analysis was conducted by investigating the average variance extracted and the shared variance between constructs. Finally, relative weight analysis was conducted to ascertain the unique contribution explained by the work-specific and general life domain factors. Results showed that burnout could be distinguished from depressive symptoms. Job demands, depressive symptoms, and satisfaction with life all explained significant amounts of variance in the burnout construct. Relative weight analysis revealed that emotional load and depressive symptoms explained equal amounts of variance in burnout, but that the aggregated work-specific factors explained the most variance in burnout. This study indicates that burnout is a multi-domain phenomenon and not isolated to the domain of work. Further research is needed in this regard.

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