scholarly journals Natural endogenous factors of geoecological transformation of the mountain part of North Ossetia

2020 ◽  
Vol 164 ◽  
pp. 07025
Author(s):  
Khyisa Chotchaev ◽  
Vladislav Zaalishvili ◽  
Boris Dzeranov

Geoecological transformation of the biocenosis habitat is an evolutionary process, predetermined by the interaction of the lithosphere with the hydrosphere, atmosphere and the solar system as a whole, under the condition of anthropogenic impact absence. Geoecological transformation occurs under the influence of many natural factors of an endogenous and exogenous nature, the effects of which in the mountainous areas are especially intensive and damageable, due to the sharp and intense exposure forms of exogenous factors of the erosive destruction, the presence of a large gravitational potential for a spatial removal of the destroyed material, poor protection of the bedrocks by biogeocenosis, low strength of terrigenous rocks, etc. The main factors of the intensive geoecological transformation of the mountain landscape are endogenous geodynamic processes. The Greater Caucasus, as the geosynclinal region of young Alpine orogenesis, is characterized by the active deep geodynamics, the focal zones of which can be activated in time and migrate in the lithosphere, as evidenced by the interchange of the periods of seismic activity and relative passivity of deep geodynamic processes (fault tectonics, seismicity and magmatic manifestations). A high density of the tectonic faults contributes to the weakening of rock strength in the zone of a faulting crop out due to jointing and claying along the friction planes.

2020 ◽  
Vol 10 (9) ◽  
pp. 220
Author(s):  
David Yun Dai ◽  
Xian (Stella) Li

This study looks at the educational experiences, from the preschool years to advanced professional training in STEM fields, of a targeted sample of 10 (7 male, 3 female) early college entrants in China who later became professors at prestigious USA research universities. The purpose of the study was to find out (1) what some identifiable endogenous factors were about these individuals that facilitated the success of their accelerated learning and development; (2) what kinds of exogenous factors (e.g., environmental opportunities, resources, support) they experienced from childhood to adulthood that enhanced the successful acceleration experience; and (3) how these endogenous and exogenous factors facilitated their developmental transitions every step of the way, especially from the role of a student to that of an aspiring scientist. These questions are addressed in light of evolving complexity theory. Retrospective interviews were used for data collection. Thematic analysis of the codes from interview data yielded a conceptual map. A distinct set of endogenous and exogenous factors at different developmental junctures were identified, and their dynamic interplay was delineated to account for accelerated trajectories toward a scientific research career. The theoretical significance and practical implications of the study for talent development in science are discussed.


PEDIATRICS ◽  
1948 ◽  
Vol 2 (3) ◽  
pp. 239-241
Author(s):  
MAY G. WILSON

CERTAIN individuals are more susceptible than others to many conditions. In recent years it has become clear that in rheumatic fever, susceptibility of the host is an important factor in the pathogenesis of the disease. It was concluded from genetic and epidemiologic studies that susceptibility to rheumatic fever is on a genetic and age basis. Although the susceptible child cannot be identified at the present time, the number of children expected to be susceptible in a group of families of known genotype may be determined on the basis of recessive inheritance. It may, therefore, be postulated that distributed among a group of families of known hereditary background are children who are susceptible and insusceptible to the acquisition of rheumatic fever. As a direct result of long term observation of rheumatic families over a period of 30 years, a second generation of children of known hereditary background is available to us for exploratory studies. This group includes children from families in which one or both parents are rheumatic, or in which neither parent is rheumatic. In this group there are normal (insusceptible), susceptible and rheumatic children. The nature of the hereditable factors which may be responsible for susceptibility is obscure. Recent advances in biochemical genetics have provocative implications in rheumatic fever. Of particular interest are the observations which demonstrate that such biochemical reactions as enzyme and protein specificities are gene determined. As a working hypothesis it seemed reasonable to postulate that in a susceptible child, abnormal physiologic, chemical, immunologic or hormonal responses might be found. Differences might then be observed in certain reactions between the normal group and a group containing a high proportion of genetically susceptible children. This approach does not conflict with the concept that exogenous factors, irrespective of their nature, may also be operative. If the nature of the endogenous factors were known, the role of possible exogenous agents would be clarified.


2019 ◽  
Vol 64 (2 (252)) ◽  
pp. 122-149
Author(s):  
Miłosz Gołyszny

There are several sources that determine school abilities: endogenous factors, i.e. abilities, intelligence, personality, internal motivation, and exogenous factors, such as environment and external motivation. The causes of school failures are found most often in the level of fluid or crystallised intelligence. In particular in the fluid intelligence, which is genetically conditioned. The type of personality also affects the achievement in learning, as well as the pleasure derived from it. The motives (for which students take action) can also have an impact on achievements – school abilities. There are two types of motivation: internal and external. The internal, exogenous motivation has an extremely strong positive impact and it should be stimulated by mentors – teachers. Furthermore, there are several types of general abilities that also affect school competences. Abilities should be noticed and developed during school education. Undoubtedly, the educational system should develop creativity and support the development of all individual characteristics, providing opportunity for self-fulfilment.


2018 ◽  
Vol 54 (4) ◽  
pp. 732-760 ◽  
Author(s):  
Yang Yu

There is an increasing tension between the land development regime and grassroots antigrowth coalitions in Hong Kong, where public spaces have played a critical role. This article aims to examine (1) whether the transitional process of urban political orders is punctuated or gradual; (2) whether transitional change is driven by exogenous factors, endogenous factors, or both; (3) the extent to which the social production model of power is still applicable in the postindustrial era; and (4) how political sociospatial dialectic works in the changing urban political order. This study first reviews the development of Public Open Spaces in Private Development (POSPD) with the changing urban political order, and then explains why POSPD policy has become the concern of both the regime and the emerging antigrowth coalition. Two representative spatial protests are explored to illustrate how awakening civil power challenges the regime and how the regime resists and defends its realm.


2013 ◽  
Vol 28 (3) ◽  
pp. 131-136
Author(s):  
Eileen M Wanke ◽  
Helmgard Mill ◽  
Alice Wanke ◽  
Jacqueline Davenport ◽  
Fistd Checcetti ◽  
...  

OBJECTIVE: Injury prevention in professional dancers is very important due to the high risk for acute injuries posing a threat to dancers’ careers. Causative factors of acute injuries in professional dance can be divided into exogenous and endogenous factors. Although both are known in professional dance, there is still a lack of data to have a differentiated view. The aim of this study is to analyze exogenous factors resulting in work accidents of professional dancers. METHODS: The data for the evaluation were obtained from work accident reports (n = 1,438, female 722, male 716) from six Berlin Theatres. Evaluation and descriptive statistics were conducted by SPSS 18 and Excel 2007. RESULTS: About half (48.5%, n = 698) of all work accidents are caused by exogenous factors. The “dance partner” is the most common exogenous factor (39.9%), followed by the dance floor (28.24%) and props (13.6%). The lower extremity is the most frequent structure injured in either sex (male 47.3%, female 61.3%), followed by the upper extremity in females (14.6%) and spine in male dancers (19.8%). The stage is the most common injury location in both genders (males 63.9%, females 56.8%). Acute injuries caused by exogenous factors were particularly sustained during performances (males 58.8%, females 50.5%) and during rehearsals (males 33%, females 39.9%). CONCLUSION: This study shows the key significance of exogenous factors in acute injuries in professional dance. Preserving the dancers’ health and preventing injuries takes top priority, and therefore, interventions in the artistic work cannot be ruled out when preventive measures are implemented.


Agriculture ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 264 ◽  
Author(s):  
Wojciech Sroka ◽  
Michał Dudek ◽  
Tomasz Wojewodzic ◽  
Karol Król

The increasing importance of large cities (metropolises) poses a range of challenges to the socio-economic functions of the rural and agricultural areas around them. One such challenge is pressure exerted on family-run farms to abandon agricultural activity and on people engaged in such activity to shift to other sectors. This may be a hindrance to successful succession on family farms. The aim of this paper is to present spatial variation in generational changes in farms located around large cities (metropolises) in Poland and to assess the factors affecting the scale of such changes. Special attention was paid to the importance of the location of farms relative to large cities. One innovative feature of the approach presented was to conduct an analysis of generational changes in the agricultural sector at the supra-local level along with an attempt to quantify the impact of large urban centers on that process. The empirical material based on which the conclusions were formulated included official statistics data and information made available by an institution engaged in the implementation of agricultural policy programs financed from European Union (EU) funds, i.e., young farmer payments (Common Agricultural Policy (CAP) pillar I) and measures “Setting up of young farmers” and “Early retirement” (CAP Pillar II). In the executed study, methods of descriptive and multivariate statistics, including regression trees, were used. It was found that socio-economic (exogenous) factors had a significant statistical impact on generational changes in farms. In areas with an attractive labor market and a high level of urbanization, a successful generational shift in farms occurred less often. Nonetheless, generational changes in the agriculture of the analyzed areas were relatively most strongly determined by endogenous factors linked with the economic potential of the farm. Farm characteristics (area of agricultural land and economic size) and the characteristics of managers, including in particular their education, were found to be more important than exogenous factors. In areas where large and economically strong farms dominated and the level of education among farmers was relatively high, generational changes were faster compared to other areas.


2015 ◽  
Vol 15 (2) ◽  
pp. 198-218 ◽  
Author(s):  
Monika Jingmond ◽  
Robert Ågren

Purpose – The purpose of this study is to identify the primary root causes of defects in terms of why they persist in construction, despite the increasing implementation of quality systems. Defects in construction continue to be a source of concern in the construction industry. There have been studies that have tried to identify causes of defects. Although concepts are usually related to organisational factors, previous studies have been carried out on an operational level. There is a well-trodden area within the literature relating to the operational level, but little is known about the causes of defects on a higher, organisational level within construction. Design/methodology/approach – A new approach based on the notion of process causality and the use of cognitive mapping has been adopted. The aim was to take a step back and unravel causes of defects in the execution of construction projects. From workshops with representatives drawn from different parts of the industry, themes have been identified and investigated from a causation perspective. Findings – It was found that the causes of defects mainly reside in endogenous factors within organisations as opposed to execution failure or exogenous factors related to market, material or equipment behaviour. Originality/value – More specifically, it was found that the dominant cause of defects lies within organisational shortcomings, suggesting that improvements can be found on the management and strategic levels within projects instead of on the operational level.


2020 ◽  
Vol 65 (12) ◽  
pp. 778-784
Author(s):  
D. P. Piskunov ◽  
L. A. Danilova ◽  
A. S. Pushkin ◽  
S. A. Rukavishnikova

A literature review in the article presents an analysis of the influence of endogenous and exogenous factors on quality of preanalytical phase of laboratory testing. The review shows significance of external and internal factors influencing blood samples at preanalytical phase of laboratory testing. Among the exogenous factors considered: phlebotomy, test tubes for samples, transportation and storage. A number of factors exist at this phase that significantly affect test results. We examined these aspects of phlebotomy process: staff training, disinfectant contamination, needle diameter, needle material contamination. The review considers possible contamination with tube components and the importance of choosing the right anticoagulants and excipients. Transportation and storage of biological samples can be a source of errors at the preanalytical phase of laboratory testing. We analyzed the problem of determining the stability of analytes during storage and aspects of transportation samples by modern means. Among the endogenous factors considered: hemolysis, lipemia, icterricity, cell metabolism.. Hemolysis is one of the most frequent consequences of errors at the preanalytical phase. We analyzed importance of choosing a method for identifying hemolized tubes and the heterogeneity of bias results on different analytical systems. The review shows contribution of various classes of lipoproteins to turbidity of sample, possible preanalytical errors and impact on analytical tests. We examined possible effects of high bilirubin concentrations on analyte measurements. In the review, we also examined metabolism of some cells and its effect on samples.


1995 ◽  
Vol 03 (04) ◽  
pp. 1211-1244 ◽  
Author(s):  
ELIAS L. KHALIL

The paper assesses the ecological approach which challenges the standard concept of scarcity in both neoclassical economics and neo-Darwinian orthodoxy. The focus is on comparative theory analysis with regards to the relevance of matter/energy influx. It should not be surprising, in light of the mathematical structure, that the ideas of optimization of utility in orthodox economics and optimization of fitness in mainstream biology are based on common assumptions. One of the assumptions is that environmental resources are given or exist passively in relation to the actor. Otherwise, the mathematical maximization functions would not be feasible. The orthodox assumption of resources as given for a specific population of firms or organisms need not deny that the environment continuously changes, but the assumption entails that such changes are by-products of the interaction of the population with the environment, the interference of other populations, and other exogenous factors. Thus, the orthodox assumption of resources as given, according to the ecological school, excludes, at first approximation, endogenous factors in the explanation of environmental dynamics or the economy-environment nexus. Inspired by Alfred Lotka's work, the ecological agenda in economics (as led by Daly and Costanza) and in biology (as advocated by Odum, Wicken, Depew, Weber, and Ulanowicz) advance the same alternative to the orthodox axiom concerning resources; viz., resources are a function of the active agent. While such an alternative is very fruitful, it does not go far enough. It has limitations: In economics, the ecological approach generally cannot solve the long-term problem of the asymmetric exchange between human economy and the environment. In the life sciences, the ecological approach, as far as it adheres to reformed Darwinism, faces difficulties with regards to the concepts of organization and the process of development/evolution. These problems call for similar conceptual innovations in both disciplines.


2019 ◽  
Vol 4 (1) ◽  
pp. 79
Author(s):  
Umar Sidiq ◽  
Nurul Aini

Blind is a person who has a disorder in his vision. A person's blindness is caused by endogenous factors such as hereditary, or due to exogenous factors, such as accidents, drugs and others. The main obstacle of a blind child is not working in his sense of vision. So that children with visual impairments, including children with special needs, are children who experience physical disorders that are different from normal children so that children with visual impairments need special education services and guidance so they can develop their potential as optimally as possible. This study aims to describe the foundation of guidance carried out on children with special needs (blind), as well as to describe aspects of coaching for children with special needs (blind). This study included qualitative research with a descriptive approach. Aisyiah Ponorogo Orphanage as a non-formal educational institution that carries out its duties and functions in learning and fostering children, including dealing specifically with children who have visual impairments. In such a long period of time, there are certainly many records and experiences in the development of blind children.


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