scholarly journals Building a Body Shape Morphospace of Teleostean Fishes

2019 ◽  
Vol 59 (3) ◽  
pp. 716-730 ◽  
Author(s):  
S A Price ◽  
S T Friedman ◽  
K A Corn ◽  
C M Martinez ◽  
O Larouche ◽  
...  
Keyword(s):  
Body Shape ◽  
Morphological Evolution ◽  
Three Dimensions ◽  
Future Research ◽  
Shape Evolution ◽  
Secondary Axis ◽  
Primary Axis ◽  
Size Correction ◽  
Body Shapes ◽  
Promising Avenue

Abstract We present a dataset that quantifies body shape in three dimensions across the teleost phylogeny. Built by a team of researchers measuring easy-to-identify, functionally relevant traits on specimens at the Smithsonian National Museum of Natural History it contains data on 16,609 specimens from 6144 species across 394 families. Using phylogenetic comparative methods to analyze the dataset we describe the teleostean body shape morphospace and identify families with extraordinary rates of morphological evolution. Using log shape ratios, our preferred method of body-size correction, revealed that fish width is the primary axis of morphological evolution across teleosts, describing a continuum from narrow-bodied laterally compressed flatfishes to wide-bodied dorsoventrally flattened anglerfishes. Elongation is the secondary axis of morphological variation and occurs within the more narrow-bodied forms. This result highlights the importance of collecting shape on three dimensions when working across teleosts. Our analyses also uncovered the fastest rates of shape evolution within a clade formed by notothenioids and scorpaeniforms, which primarily thrive in cold waters and/or have benthic habits, along with freshwater elephantfishes, which as their name suggests, have a novel head and body shape. This unprecedented dataset of teleostean body shapes will enable the investigation of the factors that regulate shape diversification. Biomechanical principles, which relate body shape to performance and ecology, are one promising avenue for future research.

scholarly journals Body shape diversification along the benthic–pelagic axis in marine fishes

2020 ◽  
Vol 287 (1931) ◽  
pp. 20201053
Author(s):  
S. T. Friedman ◽  
S. A. Price ◽  
K. A. Corn ◽  
O. Larouche ◽  
C. M. Martinez ◽  
...  
Keyword(s):  
Body Shape ◽  
Marine Fishes ◽  
Shape Evolution ◽  
Teleost Fishes ◽  
Marine Teleost ◽  
Linear Measurements ◽  
Body Shapes ◽  
Average Body ◽  
High Diversity ◽  
Phenotypic Responses

Colonization of novel habitats can result in marked phenotypic responses to the new environment that include changes in body shape and opportunities for further morphological diversification. Fishes have repeatedly transitioned along the benthic–pelagic axis, with varying degrees of association with the substrate. Previous work focusing on individual lineages shows that these transitions are accompanied by highly predictable changes in body form. Here, we generalize expectations drawn from this literature to study the effects of habitat on body shape diversification across 3344 marine teleost fishes. We compare rates and patterns of evolution in eight linear measurements of body shape among fishes that live in pelagic, demersal and benthic habitats. While average body shape differs between habitats, these differences are subtle compared with the high diversity of shapes found within each habitat. Benthic living increases the rate of body shape evolution and has led to numerous lineages evolving extreme body shapes, including both exceptionally wide bodies and highly elongate, eel-like forms. By contrast, we find that benthic living is associated with the slowest diversification of structures associated with feeding. Though we find that habitat can serve as an impetus for predictable trait changes, we also highlight the diversity of responses in marine teleosts to opportunities presented by major habitats.

scholarly journals Magnetospheric Structure of Rotation-Powered Neutron Stars

1992 ◽  
Vol 128 ◽  
pp. 56-77 ◽  
Author(s):  
Jonathan Arons
Keyword(s):  
Radio Emission ◽  
Gamma Radiation ◽  
Heavy Ions ◽  
Theoretical Work ◽  
Future Research ◽  
Observational Constraints ◽  
Polar Caps ◽  
Recent Theoretical Work ◽  
Density Flow ◽  
Promising Avenue

AbstractI survey recent theoretical work on the structure of the magnetospheres of rotation-powered pulsars, within the observational constraints set by their observed spindown, their ability to power synchrotron nebulae and their ability to produce beamed collective radio emission, while putting only a small fraction of their energy into incoherent X- and gamma radiation. I find no single theory has yet given a consistent description of the magnetosphere, but I conclude that models based on a dense outflow of pairs from the polar caps, permeated by a lower density flow of heavy ions, are the most promising avenue for future research.

scholarly journals SmartFit: Smartphone Application for Garment Fit Detection

Electronics ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 97
Author(s):  
Kamrul H. Foysal ◽  
Hyo Jung Chang ◽  
Francine Bruess ◽  
Jo Woon Chong
Keyword(s):  
Body Shape ◽  
Online Shopping ◽  
Smartphone Application ◽  
Shape Detection ◽  
Time Saving ◽  
Apparel Shopping ◽  
Promising Solution ◽  
Clothing Fit ◽  
Body Shapes ◽  
Garment Fit

The apparel e-commerce industry is growing day by day. In recent times, consumers are particularly interested in an easy and time-saving way of online apparel shopping. In addition, the COVID-19 pandemic has generated more need for an effective and convenient online shopping solution for consumers. However, online shopping, particularly online apparel shopping, has several challenges for consumers. These issues include sizing, fit, return, and cost concerns. Especially, the fit issue is one of the cardinal factors causing hesitance and drawback in online apparel purchases. The conventional method of clothing fit detection based on body shapes relies upon manual body measurements. Since no convenient and easy-to-use method has been proposed for body shape detection, we propose an interactive smartphone application, “SmartFit”, that will provide the optimal fitting clothing recommendation to the consumer by detecting their body shape. This optimal recommendation is provided by using image processing and machine learning that are solely dependent on smartphone images. Our preliminary assessment of the developed model shows an accuracy of 87.50% for body shape detection, producing a promising solution to the fit detection problem persisting in the digital apparel market.

scholarly journals Analyzing input quality along three dimensions: interactive, linguistic, and conceptual

2019 ◽  
Vol 47 (1) ◽  
pp. 5-21 ◽  
Author(s):  
Meredith L. ROWE ◽  
Catherine E. SNOW
Keyword(s):  
Socioeconomic Status ◽  
Early Childhood ◽  
Language Learning ◽  
Pretend Play ◽  
Three Dimensions ◽  
Book Reading ◽  
Future Research ◽  
Input Quality ◽  
Children's Development

AbstractThis paper provides an overview of the features of caregiver input that facilitate language learning across early childhood. We discuss three dimensions of input quality: interactive, linguistic, and conceptual. All three types of input features have been shown to predict children's language learning, though perhaps through somewhat different mechanisms. We argue that input best designed to promote language learning is interactionally supportive, linguistically adapted, and conceptually challenging for the child's age/level. Furthermore, input features interact across dimensions to promote learning. Some but not all qualities of input vary based on parent socioeconomic status, language, or culture, and contexts such as book-reading or pretend play generate uniquely facilitative input features. The review confirms that we know a great deal about the role of input quality in promoting children's development, but that there is much more to learn. Future research should examine input features across the boundaries of the dimensions distinguished here.

Effects of social attachment on social media continuous usage intention: The mediating role of affective commitment

2020 ◽  
pp. 1-13
Author(s):  
Maosheng Yang ◽  
Shangui Hu ◽  
Bagna Essohanam Kpandika ◽  
Lei Liu
Keyword(s):  
Social Media ◽  
Structural Equation ◽  
Affective Commitment ◽  
Underlying Mechanism ◽  
Equation Model ◽  
Three Dimensions ◽  
Future Research ◽  
Social Attachment ◽  
Mediating Role ◽  
Continuous Usage Intention

BACKGROUND: Social attachment has been identified as a key antecedent motivating users’ social media involvement. However, there is a scarcity of research investigating whether and how three dimensions of social attachment exert impacts on users’ continuous usage intention of social media. OBJECTIVE: Based on structural equation model analysis, the current research clarifies the relationships between social attachment, affective commitment and social media continuous usage intention, which unveils the underlying mechanism through which three dimensions of social attachment influence users’ continuous usage intention of social media. METHODS: A survey was conducted with 536 informative responses obtained from TikTok public users for hypothesis testing analysis. RESULTS: Results indicate that three dimensions of social attachment (social connections, social dependence and social identity) are all positively related to users’ continuous usage intention of social media. Affective commitment partially mediates the relationship between social attachment and users’ continuous usage intention of social media. CONCLUSIONS: The current research makes an in-depth study about the underlying mechanism whereby social attachment exerts impacts on social media continuous usage intentionand provides several managerial and theoretical implications. Future research directions are discussed as well.

scholarly journals Effects Of Combinations Of Patternmaking Methods And Dress Forms On Garment Appearance

2017 ◽  
Vol 17 (3) ◽  
pp. 277-286 ◽  
Author(s):  
Chinami Fujii ◽  
Masayuki Takatera ◽  
KyoungOk Kim
Keyword(s):  
Sensory Evaluation ◽  
Body Shape ◽  
Front Side ◽  
Calculation Methods ◽  
Ideal Body ◽  
Sensory Evaluations ◽  
Body Shapes ◽  
Made In ◽  
The Ideal

AbstractWe investigated the effects of the combinations of patternmaking methods and dress forms on the appearance of a garment. Six upper garments were made using three patternmaking methods used in France, Italy, and Japan, and two dress forms made in Japan and France. The patterns and the appearances of the garments were compared using geometrical measurements. Sensory evaluations of the differences in garment appearance and fit on each dress form were also carried out. In the patterns, the positions of bust and waist darts were different. The waist dart length, bust dart length, and positions of the bust top were different depending on the patternmaking method, even when the same dress form was used. This was a result of differences in the measurements used and the calculation methods employed for other dimensions. This was because the ideal body shape was different for each patternmaking method. Even for garments produced for the same dress form, the appearances of the shoulder, bust, and waist from the front, side, and back views were different depending on the patternmaking method. As a result of the sensory evaluation, it was also found that the bust and waist shapes of the garments were different depending on the combination of patternmaking method and dress form. Therefore, to obtain a garment with better appearance, it is necessary to understand the effects of the combinations of patternmaking methods and body shapes.

Personality and contextual antecedents of organizational citizenship behavior: A study of two occupational groups

2014 ◽  
Vol 20 (4) ◽  
pp. 441-462 ◽  
Author(s):  
Pinar H. Imer ◽  
Hayat Kabasakal ◽  
Ali Dastmalchian
Keyword(s):  
Organizational Commitment ◽  
Organizational Citizenship ◽  
Organizational Citizenship Behavior ◽  
Civic Virtue ◽  
Helping Behavior ◽  
Three Dimensions ◽  
Future Research ◽  
Unique Contribution ◽  
Occupational Groups ◽  
The Impact

AbstractThis paper examines the impact of personality trait of dispositional affect and contextual variables of multiple commitments on organizational citizenship behaviors (OCBs) in two occupational groups. Three dimensions of OCBs were considered: helping, civic virtue and sportsmanship behaviors. We used positive and negative affectivity scale to measure dispositional affect. For commitments, we examined affective and normative organizational and occupational commitments. The data were collected from 180 engineers and 180 teachers. The findings show that affect, multiple commitments and occupation all have significant impacts on different dimensions of OCBs. Dispositional affect had the most influence on all three dimensions of OCBs. In addition, helping behavior is affected by normative organizational commitment while civic virtue behavior is influenced by affective commitments (both organizational and occupational) and occupation. Sportsmanship behavior is explained by occupation and affective organizational commitment. Occupation has been shown to make a unique contribution to understanding OCBs. The present study showed that the teachers, for example, exhibited more civic virtue and sportsmanship behaviors than the engineers. Implications of the findings for future research and practice are discussed.

scholarly journals Sustainability in Participatory Sports Events: The Development of a Research Instrument and Empirical Insights

2021 ◽  
Vol 13 (11) ◽  
pp. 6034
Author(s):  
Ine Hugaerts ◽  
Jeroen Scheerder ◽  
Kobe Helsen ◽  
Joris Corthouts ◽  
Erik Thibaut ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Environmental Sustainability ◽  
Online Survey ◽  
Three Dimensions ◽  
Future Research ◽  
Validity And Reliability ◽  
Research Instrument ◽  
Sports Events ◽  
The Social ◽  
Development Goals

The United Nations (UN) considers sports as an important enabler of sustainable development. The popular and fast-growing Participatory Sports Event (PSE) sector can play an important role in this regard, however, research that measures and reports sustainability in PSEs is scarce. Therefore, the aim of this paper was to construct and validate a research instrument based on the UN’s sustainable development goals, and to examine sustainability in PSEs. To this end, an online survey was administered among a representative sample of 303 PSE organisers, located in Flanders, Belgium. A confirmatory factor analysis affirmed the social, economic and environmental dimensions of the instrument and provided evidence for its validity and reliability. The results reveal significant discrepancies between the three dimensions, with a noticeable lower score for environmental sustainability compared to social and economic sustainability. Furthermore, challenges are highlighted in the field of the civil society sector and in walking sports events. The findings also indicate that large-sized events are more likely to be sustainable. The current study can act as a foundation for future research on sustainability in PSEs and can assist PSE organisers and policymakers to increase the sustainability-related performance of the sector.

Human resources competencies: a key scale to assess HRCs, including items in knowledge business, functional expertise and managing change

2022 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Keyword(s):  
Human Resources ◽  
Design Methodology ◽  
Three Dimensions ◽  
Future Research ◽  
Content Type ◽  
Managing Change ◽  
Industrial Town ◽  
Appropriate Scale ◽  
Hr Competencies

Purpose The purpose was to produce a standardized tool in the form of a questionnaire to measure HR competencies Design/methodology/approach The authors collected data from 234 managers and experts in human resources of selected firms existing in the Yazd Industrial Town. A questionnaire was developed to assess HRCs. Findings The paper produced a key scale for assessing HRCs in three dimensions: knowledge business, functional expertise and managing change. Two items of the original 33 were dropped as they were found to be unreliable Originality/value The authors believed the developed questionnaire can be used as an appropriate scale for measuring HRCs in future research and also in organizations in Iran.

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