The speciation continuum and species relations between populations: in search of agreement between the theory and practice of systematics

2021 ◽  
pp. 173-179
Author(s):  
Oleksandr Zinenko
Keyword(s):  
Reproductive Isolation ◽  
Species Concept ◽  
Climatic Conditions ◽  
Point Of View ◽  
Theory And Practice ◽  
Hybrid Origin ◽  
Isolated Populations ◽  
As Species ◽  
Mitochondrial Cytochrome B ◽  
Traditional Taxonomy

From an evolutionary point of view, the achievement of species status by a group of populations is an ongoing process (except for rare cases of instantaneous speciation), during which isolated populations acquire traits and adaptations that minimize gene flow between them. However, depending on the group, the ways and timing of the gaining of reproductive isolation may be different. In such a complex group for systematics as small vipers (genus Vipera, subgenus Pelias), there are a number of problematic situations for species delimitation: the ability to form hybrids and hybrid populations between species, adaptive hybridization and hybrid speciation, and possible traces of reversed speciation, which indicate that complete and irreversible reproductive isolation may not be achieved at all. The effectiveness of reproductive isolation largely depends on external factors, mostly related to the range spatial structure, ecology of species in areas of sympatry, as well as climatic conditions and their changes, landscape dynamics, etc. The only species concept that allows to describe new species in the absence of reproductive isolation, recognizes the possibility of hybrid and reverse speciation — de Queiroz unified species concept — is practically unsuitable due to the need to consider as species a large number of isolated populations. Therefore, the solution is a conservative approach in practical taxonomy, which takes into account as a species criterion the ecological divergence of species, the possibility of their sympatric existence, which is usually achieved at 5% divergence of the mitochondrial cytochrome b gene. Stabilized hybrid populations occupying distinct ecological niche different from those of parental species also deserve recognition as species of hybrid origin. Not only species deserves to be protected, but also a distinguishable and diverged group of populations — Evolutionary Significant Unit (ESU) or subspecies in traditional taxonomy.

Effect of autumn feeding on dynamics of rectal congestion with excrement in carpathian breed honey bees

2020 ◽  
pp. 26-28
Author(s):  
Olesya V Strelbitskaya ◽  
◽  
Vladimir I. Kravchenko ◽  
Keyword(s):  
Point Of View ◽  
Theory And Practice ◽  
Complex Activity ◽  
Important Indicator ◽  
Apple Cider ◽  
Sugar Syrup ◽  
Main Indicator ◽  
Biological Laws ◽  
Honey Solution ◽  
Bee Colonies

Basic biological laws that govern the life of the bee family, as well as considering it as a whole organism, are necessary instruments for implementing effective methods of beekeeping and increasing the productivity of the industry. The study of the exterior features of bees must be carried out from different points of view for the concept of the complex activity of the bee family and in order to recommend methods for improving the preparation of bees for winter. Study of the mass of working bees and their rectum began to be used as the main indicator that affects the nature of the preparation of bee individuals for wintering. From the point of view of both theory and practice, filling the rectum with excrement in the autumn period will be an important indicator of an effective wintering in terms of preserving and further developing bee colonies. Effect of two kinds of liquid top feeding acidified with apple cider vinegar on the rectum congestion with excrement in working bees in the autumn, and the safety of bee colonies after winter was discussed in the article. The results of the indicators of the mass of working bees and intestinal mass when feeding two types of top dressing in the form of sugar syrup and honey solution with the addition of apple cider vinegar for the purpose of acidification are presented. The dynamics of rectal congestion in this group of bees is less compared to the group of bees receiving food in the form of sugar syrup. After wintering, during the spring audit, it was found that the safety of bees fed the autumn top dressing in the form of a honey solution with the addition of apple cider vinegar was 95% compared to bee families that received sugar syrup, the safety was 80.5%, with the detection of liquid excrement on the walls of hives and honeycombs

Assessment of Roma Children from Socially Disadvantageous Environment

2018 ◽  
Vol 52 (2) ◽  
pp. 127-139
Author(s):  
Ján Ferjenčík
Keyword(s):  
Psychological Assessment ◽  
Psychological Functioning ◽  
Social Attitudes ◽  
Point Of View ◽  
Theory And Practice ◽  
Recent Theory ◽  
Assessment Practice ◽  
Teaching Expertise ◽  
Financial Conditions ◽  
Roma People

AbstractIntroduction:Psychological assessment of Roma children belongs to the most controversial topics in recent theory and practice of school psychology in Slovakia. The paper discusses the problem from the three main aspects.Discussion:The first of them raises into question the usability of “general intelligence” construct in the assessment practice. It is shown that from the psychometric point of view it is improper to represent couple of qualitatively different attributes by sole number. Moreover, intelligence as a construct refers to general mental achievement of child here and now but it says nothing about the causes and reasons of the achievement.The second part is devoted to the problem of test adaptation. The author draws attention to the fact that Roma people are the minority with own characteristics, including language, style of life, customs and values. Due to this, it is necessary to use in the psychological assessment solely well adapted psychological tests with special norms for Roma children.The third topic discusses the position of psychologists in decision-making with regard to the type of education of a particular child.Limitations:Because education is realized in a broad social context (policy, social attitudes and expectations, material and financial conditions, teaching expertise, etc.), many of these factors are out of psychologists´ direct control and competencies. Due to this, the primary task in the psychological assessment of Roma pupils should not be based on the question about the advisability of their special education. Instead of this, the psychologist should be concerned more on the proper description and explanation of children’s psychological functioning and, following this, on formulating individual and particular recommendations how and what cognitive, emotional or motivational elements it is necessary to develop at school.

La enseñanza de la ética profesional a estudiantes de derecho: análisis de caso

2018 ◽  
pp. 145
Author(s):  
Juan Pablo Beca
Keyword(s):  
Professional Ethics ◽  
Ethics Education ◽  
Teaching Experience ◽  
Point Of View ◽  
Theory And Practice ◽  
Ethics Course ◽  
Approach Theory ◽  
Competency Based ◽  
Catholic Tradition ◽  
The Way

ResumenEl trabajo analiza el curso Ética Profesional en la carrera de Derecho en la Universidad Católica de Temuco. Examina la forma como se abordaba la ética profesional antes de la creación del curso, y lo que ha ocurrido con él a través de sucesivos cambios curriculares y la introducción del modelo por competencias. El curso aporta al sello identitario, mediante un enfoque multidisciplinario. El curso ha vinculado teoría y práctica, desde que comenzó a implementarse, hasta llegar actualmente a comprenderlo en la lógica de competencias. Esta mirada implica formar a los estudiantes para resolver dilemas éticos, lo que se hace mediante la metodología del ver–juzgar–actuar. Esta metodología de discernimiento es propia de la tradicióncatólica, pero se usa en este contexto sin un cariz religioso. El método en cuestión permite ir educando la autonomía a fn de tomar decisiones. Se analiza la importancia de contextualizar la enseñanza ética y la forma como esto se ha hecho en el curso. Finalmente se aborda la relevancia de formar la conciencia ética de los estudiantes.Palabras clave: Experiencia de enseñanza – Ética profesional –Método de discernimient.ResumoO artigo analisa o curso de Ética Profssional na Escola de Direito na Universidade Católica de Temuco. Examina a forma de como abordar a ética profssional antes da criação do curso, e o que tem acontecido com ele através de sucessivas mudanças curriculares e a introdução do modelo de competências. O curso aporta ao selo de identidade, através de uma abordagem multidisciplinar. O curso tem ligado teoria e prática, desde que começou a se programar até chegar atualmente a compreendê-lo na lógica de competência. Este olhar implica formar aos estudantes para resolver dilemas éticos, o que é feito pela metodologia do ver-julgar-agir. Este método de discernimento é próprio da tradição Católica, mas é usado neste contexto, sem um aspecto religioso. O método em questão permite ir educando na autonomia com a fnalidade de tomar decisões. Analisa-se a importância de contextualizar o ensino da ética e a forma como isso tem sido feito no curso. Finalmente se aborda a relevância de formar consciência ética dos estudantes.Palavras-chave: Experiência de ensino - Ética Profssional - Método de discernimento.AbstractThis paper analyses the Professional Ethics course at the School of Law of Universidad Católica de Temuco. It reviews the way in which ethics was addressed before the course was created, and what has happened with it through the subsequent curricular changes and the implementation of a competency based model. The course contributes to the seal of identity through a multidisciplinary approach. Theory and practice have been progressively bound together since the course was introduced, to reach a point, nowadays, in which the course is understood within the logic of competencies. This point of view implies educating students for solving ethical dilemmas, which is done through the see–judge–act methodology. This discernment methodology belongs to the Roman Catholic tradition, but is used in this context without its religious complexion. This method allows educating autonomy in order to make decisions. It also analyses the importance of contextualizing ethics education and the way in which this has been done in the course. Finally, it addresses the relevance ofcreating an ethical consciousness of the students.Keywords: Teaching experience – Professional Ethics – Discernment method

Theory and Practice of Quality Management in Lifelong Learning at a Public University

2018 ◽  
Vol 8 (2) ◽  
pp. 49-73
Author(s):  
Petr Adamec
Keyword(s):  
Lifelong Learning ◽  
Public University ◽  
Further Education ◽  
Point Of View ◽  
Theory And Practice ◽  
University Policy ◽  
Higher Education Act ◽  
Wide Range ◽  
Learning Programs ◽  
Education Act

The core issue of this paper is a quality in the lifelong learning. The aim of the contribution is to describe the area, level and dimensions of quality in a wide range of lifelong learning programs, respectively of further education, which are realized in the sense of § 60 and 60a of the Higher Education Act. The content of the paper also focuses on the theoretical and practical starting points of the quality phenomenon, both from the historical point of view and especially from the perspective of the current focus and concept of university policy in the European and Czech region. The paper also presents the results of a survey focusing on approaches to the quality assurance systems in the concept of components at selected public university.

scholarly journals New Deterministic Mathematical Model for Estimating the Useful Energy Output of a Medium-Sized Solar Domestic Hot Water System

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2753
Author(s):  
Miroslaw Zukowski ◽  
Walery Jezierski
Keyword(s):  
Thermal Power ◽  
Optimization Procedure ◽  
Climatic Conditions ◽  
Point Of View ◽  
Hot Water ◽  
Energy Output ◽  
Daily Consumption ◽  
Software Environment ◽  
Optical Efficiency ◽  
Domestic Hot Water

According to the authors of this paper, the mathematical point of view allows us to see what sometimes cannot be seen from the designer’s point of view. The aim of this study was to estimate the influence of the most important parameters (volume of heat storage tanks, daily consumption of domestic hot water, optical efficiency, heat loss coefficient, and total area of a solar collector) on the thermal power output of solar domestic hot water (SDHW) system in European climatic conditions. Three deterministic mathematical models of these relationships for Madrid, Budapest, and Helsinki were created. The database for the development of these models was carried out using computer simulations made in the TRNSYS software environment. The SDHW system located at the Bialystok University of Technology (Poland) was the source of the measurement results used to validate the simulation model. The mathematical optimization procedure showed that the maximum annual useful energy output that can be obtained from 1 m2 of gross collector area is 1303 kWh in the case of Madrid, 918.5 kWh for Budapest, and 768 kWh for Helsinki weather conditions.

Journey towards best practices in acting on early warning signs in complex projects within a Russian context

2015 ◽  
Vol 8 (4) ◽  
pp. 828-843 ◽  
Author(s):  
Gulnara Sharaborova ◽  
Derek H.T. Walker ◽  
Guinevere Gilbert
Keyword(s):  
Early Warning ◽  
Point Of View ◽  
Warning Signs ◽  
Theory And Practice ◽  
Doctoral Study ◽  
Content Type ◽  
Early Warning Signs ◽  
Complex Projects ◽  
Research Findings ◽  
Phd Thesis

Purpose – The purpose of this paper is to provide a summary report and reflect on a recently passed PhD thesis (Sharaborova, 2014b) related to project management topics. Design/methodology/approach – This paper focussed on narrative reflection upon the completed doctoral journey. Findings – This paper presents the thesis findings, the research models, the guide in dealing with the early warning signs that developed as a result of this research and the contribution made to theory and practice. Research limitations/implications – Limitations of the research and the perspectives of the further diffusion of the research findings are considered. Originality/value – This TRN is a PhD candidate’s point of view as well as the opinions of the scientific research supervisors about the doctoral study and its outcome. The paper could be useful for novice researchers who wish to conduct their research and did not yet make a decision.

scholarly journals Thin-film-induced morphological instabilities over calcite surfaces

2015 ◽  
Vol 471 (2176) ◽  
pp. 20150031 ◽  
Author(s):  
R. Vesipa ◽  
C. Camporeale ◽  
L. Ridolfi
Keyword(s):  
Morphological Evolution ◽  
Water Film ◽  
Environmental Parameters ◽  
Climatic Conditions ◽  
Point Of View ◽  
Theoretical Point ◽  
Carbon Dioxide Transport ◽  
Physical Mechanisms ◽  
Water Films ◽  
Dissolved Ions

Precipitation of calcium carbonate from water films generates fascinating calcite morphologies that have attracted scientific interest over past centuries. Nowadays, speleothems are no longer known only for their beauty but they are also recognized to be precious records of past climatic conditions, and research aims to unveil and understand the mechanisms responsible for their morphological evolution. In this paper, we focus on crenulations, a widely observed ripple-like instability of the the calcite–water interface that develops orthogonally to the film flow. We expand a previous work providing new insights about the chemical and physical mechanisms that drive the formation of crenulations. In particular, we demonstrate the marginal role played by carbon dioxide transport in generating crenulation patterns, which are indeed induced by the hydrodynamic response of the free surface of the water film. Furthermore, we investigate the role of different environmental parameters, such as temperature, concentration of dissolved ions and wall slope. We also assess the convective/absolute nature of the crenulation instability. Finally, the possibility of using crenulation wavelength as a proxy of past flows is briefly discussed from a theoretical point of view.

Digital monitoring system of equipment for the analysis of fuel and lubricants quality

2021 ◽  
Vol 04 (1) ◽  
pp. 54-54
Author(s):  
V. R. Nigmatullin ◽  
◽  
I. R. Nigmatullin ◽  
R. G. Nigmatullin ◽  
A.M. Migranov ◽  
...  
Keyword(s):  
Monitoring System ◽  
High Performance ◽  
Chemical Elements ◽  
Large Data ◽  
Climatic Conditions ◽  
Point Of View ◽  
Friction Units ◽  
Digital Monitoring ◽  
Wear Products ◽  
The Cost

Currently, to increase the efficiency of industrial production, high-performance and expensive technological equipment is increasingly used, in which the weakest link, from the point of view of efficiency and reliability, is the components and parts of heavily loaded tribo – couplings operating both at significantly different temperatures (conditionally under lighter conditions, the temperature difference can be 100-120 degrees) and climatic conditions (high humidity, the presence of abrasives and other chemical elements in the atmosphere). As the results of the analysis of the frequency of failures of friction units and, accordingly, the cost of their restoration reach 9-20 percent of the cost of all equipment, without taking into account significant losses of income (profit) of the enterprise from downtime. The solution of this problem is based on the study of the wear rate of friction units by the wear products accumulated in working oils, cooling lubricants, and greases. A digital equipment monitoring system (DSMT) has been developed and implemented, which includes dynamic recording of the number of wear products and oil temperature by original modern recording devices, followed by the technology of their processing and use. The system also includes methods for finding the necessary information in large data sets useful and necessary in theoretical and practical terms with a similar technique controlled by a digital monitoring system. The advantages of SMT are the ability to predict the reliability of the equipment; reduce production risks and significantly reduce inefficient costs.

scholarly journals A new proximity function generating the best known iteration bounds for both large-update and small-update interior-point methods

2007 ◽  
Vol 49 (2) ◽  
pp. 259-270 ◽  
Author(s):  
Keyvan Aminis ◽  
Arash Haseli
Keyword(s):  
Interior Point ◽  
Interior Point Methods ◽  
Optimization Problems ◽  
Linear Optimization ◽  
Point Of View ◽  
Theory And Practice ◽  
Theoretical Point ◽  
Barrier Functions ◽  
Iteration Bound ◽  
Linear Optimization Problems

AbstractInterior-Point Methods (IPMs) are not only very effective in practice for solving linear optimization problems but also have polynomial-time complexity. Despite the practical efficiency of large-update algorithms, from a theoretical point of view, these algorithms have a weaker iteration bound with respect to small-update algorithms. In fact, there is a significant gap between theory and practice for large-update algorithms. By introducing self-regular barrier functions, Peng, Roos and Terlaky improved this gap up to a factor of log n. However, checking these self-regular functions is not simple and proofs of theorems involving these functions are very complicated. Roos el al. by presenting a new class of barrier functions which are not necessarily self-regular, achieved very good results through some much simpler theorems. In this paper we introduce a new kernel function in this class which yields the best known complexity bound, both for large-update and small-update methods.

scholarly journals Performance Analyses of Temporary Membrane Structures: Energy Saving and CO2 Reduction through Dynamic Simulations of Textile Envelopes

2018 ◽  
Vol 10 (7) ◽  
pp. 2548 ◽  
Author(s):  
Mariangela De Vita ◽  
Paolo Beccarelli ◽  
Eleonora Laurini ◽  
Pierluigi De Berardinis
Keyword(s):  
Energy Saving ◽  
Environmental Sustainability ◽  
Co2 Reduction ◽  
Energy Performance ◽  
Climatic Conditions ◽  
Point Of View ◽  
Thermal Mass ◽  
Membrane Structures ◽  
Dynamic Simulations ◽  
Carbon Reduction

The aim of this research, carried out in collaboration with Maco Technology Inc., was to analyse the energy performance of temporary textile structures that are often used to host itinerant events. This paper illustrates the dynamic simulations carried on the Ducati Pavilion, designed by Maco Technology, which hosted Ducati staff during the different stages of the Superbike World Championship. Specific aspects relating to the structural/constructive system of the project were also analysed. The theme of energy saving and carbon reduction is of great importance in temporary and itinerant structures and environmental sustainability in relation to the materials used, storage, re-use, mode of transport and ability to respond efficiently to the climatic conditions of the installation sites is an important aspect. The Ducati Pavilion was modelled and analysed from an energy point of view using Design Builder software. Ways of improving performance were analysed under summer conditions. The paper focuses on the importance of optimizing the performance of textile envelopes: the methodology proposed allows visible savings in terms of energy consumption and achieves good levels of environmental comfort in temporary buildings with low thermal mass structure.

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