scholarly journals The roles of standing genetic variation and evolutionary history in determining the evolvability of anti-predator strategies

2014 ◽  
Author(s):  
Jordan Fish ◽  
Daniel R O'Donnell ◽  
Abhijna Parigi ◽  
Ian Dworkin ◽  
Aaron P Wagner
Keyword(s):  
Genetic Variation ◽  
Evolutionary History ◽  
Relative Importance ◽  
Digital Evolution ◽  
Relative Ease ◽  
Evolutionary Response ◽  
Two Factors ◽  
The Face ◽  
Evolutionary Trajectories ◽  
Different Levels

Standing genetic variation and the historical environment in which that variation arises (evolutionary history) are both potentially significant determinants of a population’s capacity for evolutionary response to a changing environment. We evaluated the relative importance of these two factors in influencing the evolutionary trajectories in the face of sudden environmental change. We used the open-ended digital evolution software Avida to examine how historic exposure to predation pressures, different levels of genetic variation, and combinations of the two, impact anti-predator strategies and competitive abilities evolved in the face of threats from new, invasive, predator populations. We show that while standing genetic variation plays some role in determining evolutionary responses, evolutionary history has the greater influence on a population’s capacity to evolve effective anti-predator traits. This adaptability likely reflects the relative ease of repurposing existing, relevant genes and traits, and the broader potential value of the generation and maintenance of adaptively flexible traits in evolving populations.

Penilaian Kinerja Dosen Dengan Menggunakan Metode AHP Studi Kasus di STIE Ahmad Dahlan Jakarta

Liquidity ◽  
2018 ◽  
Vol 2 (1) ◽  
pp. 100-109
Author(s):  
Ellya Sestri
Keyword(s):  
Decision Making ◽  
Performance Appraisal ◽  
Technological Progress ◽  
Pairwise Comparison ◽  
Relative Importance ◽  
Faculty Performance ◽  
Business World ◽  
The Face ◽  
Hierarchy Process ◽  
Rule Out

An increasingly rapid technological progress in the era of globalization in the business world, so do not rule out the possibility that a decision-making is something that is very vital in determining the decisions to be taken in the face of competitive business world. Decision making can be influenced by several aspects, this can affect the speed of decision making by the decision maker in which decisions must be quick and accurate. Lecturer Performance Assessment Using the Analytical Hierarchy Process is a decision support system that aims to assess faculty performance according to certain criteria. This system of faculty performance appraisal criteria to map a hierarchy, where each hierarchy will be performed pairwise comparison, the pairwise comparisons between criteria, so to get a comparison of the relative importance of criteria with each other. The results of this comparison is then analyzed to obtain the priority of each criterion. Once completed and performed an assessment of alternative options to be compared and calculated to obtain the best alternatives according to established criteria.

scholarly journals The Hierarchy of Walking Needs and the COVID-19 Pandemic

2021 ◽  
Vol 18 (14) ◽  
pp. 7461
Author(s):  
Mohammad Paydar ◽  
Asal Kamani Fard
Keyword(s):  
Mental Health ◽  
Urban Design ◽  
Public Spaces ◽  
Empirical Literature ◽  
The World ◽  
The Face ◽  
Current Context ◽  
Mode Of Transport ◽  
Different Levels

More than 150 cities around the world have expanded emergency cycling and walking infrastructure to increase their resilience in the face of the COVID 19 pandemic. This tendency toward walking has led it to becoming the predominant daily mode of transport that also contributes to significant changes in the relationships between the hierarchy of walking needs and walking behaviour. These changes need to be addressed in order to increase the resilience of walking environments in the face of such a pandemic. This study was designed as a theoretical and empirical literature review seeking to improve the walking behaviour in relation to the hierarchy of walking needs within the current context of COVID-19. Accordingly, the interrelationship between the main aspects relating to walking-in the context of the pandemic- and the different levels in the hierarchy of walking needs were discussed. Results are presented in five sections of “density, crowding and stress during walking”, “sense of comfort/discomfort and stress in regard to crowded spaces during walking experiences”, “crowded spaces as insecure public spaces and the contribution of the type of urban configuration”, “role of motivational/restorative factors during walking trips to reduce the overload of stress and improve mental health”, and “urban design interventions on arrangement of visual sequences during walking”.

Psychometric Properties of the Persian Version of the 11-Item de Jong Gierveld Loneliness Scale in Iranian Older Adults

2021 ◽  
pp. 016327872110157
Author(s):  
Reza Hosseinabadi ◽  
Mahshid Foroughan ◽  
Gholamreza Ghaedamini Harouni ◽  
Mohammad-Sajjad Lotfi ◽  
Yadollah Pournia
Keyword(s):  
Older Adults ◽  
Factor Analysis ◽  
Psychometric Properties ◽  
Content Validity ◽  
Concurrent Validity ◽  
Persian Version ◽  
Loneliness Scale ◽  
Two Factors ◽  
Back Translation ◽  
The Face

Loneliness is usually a chronic condition which may lead to physical and psychological undesirable consequences, and requires measurement and intervention. This study was conducted with the aim of preparing a Persian version of the 11-item de Jong Gierveld Loneliness Scale and evaluating its psychometric properties among the Iranian older adults. After applying the translation-back translation method, the prepared script was subjected to the face and content validity evaluations and a Persian version of the scale was prepared. Factor analysis, concurrent validity, internal consistency, and test-retest methods were used to validate the scale. The Persian version of the 11-item de Jong Gierveld Loneliness Scale showed acceptable content validity. The negative and significant correlations between the loneliness scores and the Philadelphia Geriatric Center Morale Scale indicated that the questionnaire had acceptable concurrent validity. The results of confirmatory factor analysis confirmed two factors for the scale. Also, the results of the intra-class correlation coefficient and Cronbach’s alpha coefficient demonstrated that the scale had acceptable reliability. The Persian version of the 11-item de Jong Gierveld Loneliness Scale is an appropriate tool for measuring loneliness in the Iranian older adults.

scholarly journals E- HRM Practices in the IT Industry with Special Reference to the State of Karnataka

2019 ◽  
Vol 8 (3S3) ◽  
pp. 249-253
Keyword(s):  
Performance Management ◽  
Human Resource ◽  
Training And Development ◽  
It Industry ◽  
Performance Management Systems ◽  
The Face ◽  
Self Service ◽  
Employee Self Service ◽  
Different Levels

Human resource management is constantly evolving into a technology-based service provider to their employees. In today’s organizations, employees see the face of HR as an Intranet portal rather than a human on the other side. This transformation of Human Resource services through technology is now being coined as E-HRM or electronic human resource. The Use of E-HRM in today’s Organizations, are in many function areas such as training and development, performance management systems, hiring and employee self-service. Organisations who adopt HR technology tools outperform those that do not. Interestingly early on the HR department was the last recipient of IT benefits in any organization, it started from keeping the database of the employees. In the present scenario employees are considered as the strategic partners of the organization and the use of high-end software have changed the face of HR departments and a new term has been coined as E-HRM. This present paper tries to evaluate the role of E-HRM in IT companies and also to measure the acceptance and effectiveness of the same at the different levels of management.

Changing Dance Works

2020 ◽  
pp. 201-220
Author(s):  
Anna Pakes
Keyword(s):  
Relative Importance ◽  
Oral Transmission ◽  
Temporal Parts ◽  
Different Levels

The chapter discusses how variability and change pose particular issues for an ontology of dance works as structures of action-types, which prompts consideration of some alternative positions. The argument (developed by Guy Rohrbaugh) that dance works are historical individuals or continuants is elaborated and critically discussed. The chapter also considers a perdurantist alternative: that dance works are fusions of their performances or temporal parts. Both endurantism and perdurantism struggle to account for the principles of continuity uniting the various embodiments or parts of works, however. The chapter reexamines the idea of persistence in the context of historical dance practice and explores the significance of processes of oral transmission for the continued existence and variability of dance works, focusing on the different levels of intention at which the action constituting a dance might be described. The relative importance of these levels at different historical moments is considered.

scholarly journals Evolutionary heritage influences Amazon tree ecology

2016 ◽  
Vol 283 (1844) ◽  
pp. 20161587 ◽  
Author(s):  
Fernanda Coelho de Souza ◽  
Kyle G. Dexter ◽  
Oliver L. Phillips ◽  
Roel J. W. Brienen ◽  
Jerome Chave ◽  
...  
Keyword(s):  
Life History ◽  
Evolutionary History ◽  
Large Scale ◽  
Phylogenetic Signal ◽  
Life History Strategies ◽  
Relative Importance ◽  
Life History Variation ◽  
Trait Variation ◽  
Closed Canopy ◽  
Repeated Evolution

Lineages tend to retain ecological characteristics of their ancestors through time. However, for some traits, selection during evolutionary history may have also played a role in determining trait values. To address the relative importance of these processes requires large-scale quantification of traits and evolutionary relationships among species. The Amazonian tree flora comprises a high diversity of angiosperm lineages and species with widely differing life-history characteristics, providing an excellent system to investigate the combined influences of evolutionary heritage and selection in determining trait variation. We used trait data related to the major axes of life-history variation among tropical trees (e.g. growth and mortality rates) from 577 inventory plots in closed-canopy forest, mapped onto a phylogenetic hypothesis spanning more than 300 genera including all major angiosperm clades to test for evolutionary constraints on traits. We found significant phylogenetic signal (PS) for all traits, consistent with evolutionarily related genera having more similar characteristics than expected by chance. Although there is also evidence for repeated evolution of pioneer and shade tolerant life-history strategies within independent lineages, the existence of significant PS allows clearer predictions of the links between evolutionary diversity, ecosystem function and the response of tropical forests to global change.

Structural-Acoustic Optimization of Sandwich Panels

2005 ◽  
Author(s):  
Francesco Franco ◽  
Kenneth A. Cunefare ◽  
Massimo Ruzzene
Keyword(s):  
Numerical Optimization ◽  
Composite Structures ◽  
Gradient Methods ◽  
Sandwich Panels ◽  
Relative Importance ◽  
Structural Elements ◽  
Acoustic Response ◽  
The Core ◽  
Design Flexibility ◽  
The Face

Sandwich panels, comprising face sheets enclosing a core, are increasingly common structural elements in a variety of applications, including aircraft fuselages and flight surfaces, vehicle panels, lightweight enclosures, and bulkheads. The design flexibility associated with such composite structures provides significant opportunities for tailoring the structure to the load and dynamic response requirements for the particular application. Design flexibility encompasses the details of the face sheets and the core. This paper deals with the numerical optimization of different sandwich configurations for the purposes of achieving reduced structural acoustic response. Laminated face sheets and core geometries, comprising honeycomb and truss-like structures, are considered. The relative importance of the mass and stiffening properties of the core and face sheets are discussed. The optimization work is carried out using commercial codes. Benefits and limits of using an optimization algorithm based on gradient methods are highlighted.

I. On the physiology of the embryonic heart (preliminary communication)

1893 ◽  
Vol 52 (315-320) ◽  
pp. 461-467 ◽  
Keyword(s):  
Embryonic Heart ◽  
Relative Importance ◽  
Two Factors ◽  
Preliminary Communication ◽  
Contractile Tissue

The object of the following experiments has been to study the effect of varying conditions on the heart previous to the development of a nervous mechanism, and thus to throw some light on the discussion as to the relative importance of the two factors in the heart’s action, viz., the contractile tissue and the nervous elements. The heart I have used is that of the chick at a period of incubation of seventy-two hours at a temperature of 38°C.

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