scholarly journals 2014 Dahlberg Award Winner The effects of dietary toughness on occlusopalatal variation in savanna baboons

2018 ◽  
Vol 27 (1-2) ◽  
pp. 8-15
Author(s):  
Evan Muzzall ◽  
Ryan M. Campbell ◽  
Meadow Campbell ◽  
Robert S. Corruccini

This study investigates the relationship between dietary toughness and craniofacial variation in two groups of savanna baboons. Standard craniofacial and malocclusion data were collected from a captive, soft-diet experiment group (n=24) and a sample of wild-captured baboons, raised on tougher, natural foods (n=19). We tested the hypothesis that in the absence of normal masticatory stress experienced during the consumption of wild foods, the captive baboons would exhibit higher levels of facial and dental structural irregularities. Principal component analysis indicates separation of the two samples. The soft-diet sample exhibits significantly shorter palates, greater variability in palate position, and higher frequencies of occlusal irregularities that correlate with the shorter palates. Results offer further support that long-term dietary chewing stresses have a measurable effect on adult craniofacial variation.

2021 ◽  
Author(s):  
Shahzad Hussain ◽  
Tanveer Ahmad ◽  
Syed Jawad Hussain Shahzad

Abstract We examine the relationship between financial inclusion and carbon emissions. For this purpose, we develop a composite indicator of financial inclusion based on a broad set of attributes through principal component analysis (PCA) for 26 countries in the Asia region. Our robust panel regression analysis reveals a significant positive long-term impact of financial inclusion on carbon emissions. The pairwise causality test reveals unidirectional long-term causality running from financial inclusion to carbon emissions. The study suggests that policy makers may design policies that integrate accessible financial systems into climate change adaptation strategies in order to neutralize the side effect of financial inclusion deteriorating environmental quality and inclusive sustainable economic growth. JEL ClassificationO16; O44, Q54


2018 ◽  
Vol 35 (4) ◽  
pp. 414-425 ◽  
Author(s):  
Sinove Marde ◽  
Claire Verite-Masserot

Purpose This paper aims to provide a scale of measure that is based on the antecedents of environmentally friendly consumption, which will measure multifaceted profiles and apply to several product categories over the long term. Design/methodology/approach The list of antecedents is derived from the literature and a qualitative study. Exploratory and confirmatory analyses using two samples of respondents are conducted to validate the scale. Findings The results suggest the use of a scale with three multi-dimensional facets when examining the antecedents of environmentally friendly consumption. The first facet is called “barriers to purchase” and has a four-dimensional structure; the second facet is called the “relationship with the product” and has a two-dimensional structure; and the third facet is called the “propensity to consume environmentally friendly products” and has a four-dimensional structure. Research limitations/implications Future research should seek to test and confirm the version of the global tool of measure proposed in this study. Practical implications Firms can use the tool to better understand the reasons to buy or not buy green products. They can now have multifaceted profiles to better comprehend environmentally aware consumption and to adapt their marketing strategies. Originality/value The tool of measure proposed here highlights the predictive indicators of green consumption based on its antecedents. Because these antecedents can differ not only in their nature but also in their intensity, combining them to develop a global tool is necessary.


Author(s):  
G. A. Robinson ◽  
H. G. Hunt

Surveys of the plankton at a depth of 10 m in the western English Channel have been carried out at monthly intervals from 1958 onwards using Continuous Plankton Recorders to provide data on annual fluctuations in abundance of the plankton. Interpretation of these results has been attempted by empirical associations with environmental factors (salinity, sea-surface temperature, radiation, atmospheric pressure patterns, wind speed and current strength). Principal component analysis has been used to extract the main patterns of change and correlation analysis for assessing the relationship between the plankton and the environmental factors. There are complex relationships between the plankton and all environmental factors, supporting previous conclusions that the long-term changes are mediated through interaction between the plankton and the climate. Spectral analysis showed long-term trends and shorter cycles of six and three to four years in both the biological and physical elements, indicating that changes in the western Channel are responding to changes in climate over a much wider area


2016 ◽  
Author(s):  
◽  
Jasper Grashuis

[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] In order to better understand the long-term behavior of farmer-owned economic organizations, the cooperative life cycle model is advanced and improved via the application of economic theory to each of its five phases. Specifically, transaction cost theory, property rights theory, and agency theory help explain the birth-to-death trajectory of farmer cooperatives, which tinker and reinvent to remain optimal in the competitive market. Tinkering is the adaptation of constitutional rights, policies, and procedures to adjust member objectives, and reinventing is defined as the adaptation of organizational scope or purpose to adjust cooperative actions. As such, tinkering and reinventing are two processes to maintain the long-term cooperative equilibrium. Another aspect of importance to the economic viability of farmer cooperatives is governance, which involves all the mechanisms to manage the separation of control and ownership. Cooperative governance is often assumed to be identical to corporate governance, yet differences in structures and objectives suggest otherwise. Secondary data analysis is conducted to descriptively inform the difference in governance and performance for two samples of agri-food firms and cooperatives. Demographically, all financial characteristics as well as most board and management characteristics are observed to be significantly different for the two samples. According to the main result of the empirical analysis, the causal impact of board size, female directorship, director independence, and director equity ownership on financial performance is also significantly different, which implies cooperative governance is not identical to corporate governance. As compared to the firm, the overall structure of farmer cooperatives is often analyzed in isolation. There exist typologies of the ownership structure, the governance structure, as well as the capital structure. However, the interrelationship is underexplored. To address the gap in the literature, a three-dimensional framework is informed by agency theory, finance theory, and cooperative theory. The three dimensions are member ownership diversity, member control delegation, and financial flexibility, for which a positive linear relationship is hypothesized. Primary survey data is collected for the full population of U.S. farmer cooperative to test hypotheses of the framework. Based on 371 survey responses, a relatively wide tunnel of cooperative life is observed in which low ownership diversity and low member control delegation do not correspond to high financial flexibility. Further, empirical data analysis indicates the relationship of ownership and capital is independent, while the relationship of ownership and governance is bi-directional.


2022 ◽  
pp. 026988112110667
Author(s):  
Joseph M Peill ◽  
Katie E Trinci ◽  
Hannes Kettner ◽  
Lea J Mertens ◽  
Leor Roseman ◽  
...  

Introduction: As their name suggests, ‘psychedelic’ (mind-revealing) compounds are thought to catalyse processes of psychological insight; however, few satisfactory scales exist to sample this. This study sought to develop a new scale to measure psychological insight after a psychedelic experience: the Psychological Insight Scale (PIS). Methods: The PIS is a six- to seven-item questionnaire that enquires about psychological insight after a psychedelic experience (PIS-6) and accompanied behavioural changes (PIS item 7). In total, 886 participants took part in a study in which the PIS and other questionnaires were completed in a prospective fashion in relation to a planned psychedelic experience. For validation purposes, data from 279 participants were analysed from a non-specific ‘global psychedelic survey’ study. Results: Principal components analysis of PIS scores revealed a principal component explaining 73.57% of the variance, which displayed high internal consistency at multiple timepoints throughout the study (average Cronbach’s α = 0.94). Criterion validity was confirmed using the global psychedelic survey study, and convergent validity was confirmed via the Therapeutic-Realizations Scale. Furthermore, PIS scores significantly mediated the relationship between emotional breakthrough and long-term well-being. Conclusion: The PIS is complementary to current subjective measures used in psychedelic studies, most of which are completed in relation to the acute experience. Insight – as measured by the PIS – was found to be a key mediator of long-term psychological outcomes following a psychedelic experience. Future research may investigate how insight varies throughout a psychedelic process, its underlying neurobiology and how it impacts behaviour and mental health.


Author(s):  
Zeynep Gizem Can ◽  
Ufuk Can ◽  
Harun Bal

This study aims to determine the relationship between inclusive growth and globalization. Since both concepts are multidimensional and do not directly related data on these concepts, an inclusive growth index is formed which covers sixteen different data with the help of principal component analysis. The globalization data are compiled from the KOF Swiss Economic Institute and the relationship between them is determined by Engle-Granger cointegration, Granger causality and ARDL bounds tests. Econometric findings show that inclusive growth has accelerated in the period between 1991 and 2015, that there is a long-term relationship with the inclusive growth index and the globalization index. This situation is contradictory with the conclusion that the causality relationship in the literature is towards global growth through inclusive growth. Information, social, economic and financial globalizations are directly related to economic performance, education, health and infrastructure investments and its funding conditions.


2003 ◽  
Vol 8 (2) ◽  
pp. 97-100 ◽  
Author(s):  
Maria José Sotelo ◽  
Luis Gimeno

The authors explore an alternative way of analyzing the relationship between human development and individualism. The method is based on the first principal component of Hofstede's individualism index in the Human Development Index rating domain. Results suggest that the general idea that greater wealth brings more individualism is only true for countries with high levels of development, while for middle or low levels of development the inverse is true.


2006 ◽  
Vol 27 (4) ◽  
pp. 199-207 ◽  
Author(s):  
Peter Hartmann

Spearman's Law of Diminishing Returns (SLODR) with regard to age was tested in two different databases from the National Longitudinal Survey of Youth. The first database consisted of 6,980 boys and girls aged 12–16 from the 1997 cohort ( NLSY 1997 ). The subjects were tested with a computer-administered adaptive format (CAT) of the Armed Services Vocational Aptitude Battery (ASVAB) consisting of 12 subtests. The second database consisted of 11,448 male and female subjects aged 15–24 from the 1979 cohort ( NLSY 1979 ). These subjects were tested with the older 10-subtest version of the ASVAB. The hypothesis was tested by dividing the sample into Young and Old age groups while keeping IQ fairly constant by a method similar to the one developed and employed by Deary et al. (1996) . The different age groups were subsequently factor-analyzed separately. The eigenvalue of the first principal component (PC1) and the first principal axis factor (PAF1), and the average intercorrelation of the subtests were used as estimates of the g saturation and compared across groups. There were no significant differences in the g saturation across age groups for any of the two samples, thereby pointing to no support for this aspect of Spearman's “Law of Diminishing Returns.”


2006 ◽  
Vol 27 (2) ◽  
pp. 87-92 ◽  
Author(s):  
Willem K.B. Hofstee ◽  
Dick P.H. Barelds ◽  
Jos M.F. Ten Berge

Hofstee and Ten Berge (2004a) have proposed a new look at personality assessment data, based on a bipolar proportional (-1, .. . 0, .. . +1) scale, a corresponding coefficient of raw-scores likeness L = ΢XY/N, and raw-scores principal component analysis. In a normal sample, the approach resulted in a structure dominated by a first principal component, according to which most people are faintly to mildly socially desirable. We hypothesized that a more differentiated structure would arise in a clinical sample. We analyzed the scores of 775 psychiatric clients on the 132 items of the Dutch Personality Questionnaire (NPV). In comparison to a normative sample (N = 3140), the eigenvalue for the first principal component appeared to be 1.7 times as small, indicating that such clients have less personality (social desirability) in common. Still, the match between the structures in the two samples was excellent after oblique rotation of the loadings. We applied the abridged m-dimensional circumplex design, by which persons are typed by their two highest scores on the principal components, to the scores on the first four principal components. We identified five types: Indignant (1-), Resilient (1-2+), Nervous (1-2-), Obsessive-Compulsive (1-3-), and Introverted (1-4-), covering 40% of the psychiatric sample. Some 26% of the individuals had negligible scores on all type vectors. We discuss the potential and the limitations of our approach in a clinical context.


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