current theory
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mBio ◽  
2022 ◽  
Author(s):  
Elena K. Gaidamakova ◽  
Ajay Sharma ◽  
Vera Y. Matrosova ◽  
Olga Grichenko ◽  
Robert P. Volpe ◽  
...  

The current theory of cellular defense against oxidative damage identifies antioxidant enzymes as primary defenders against ROS, with MnSOD being the preeminent superoxide (O 2 •− ) scavenger. However, MnSOD is shown to be dispensable both for radiation resistance and longevity in model organisms, the bacterium Deinococcus radiodurans and the nematode Caenorhabditis elegans .


2022 ◽  
Vol 258 ◽  
pp. 04002
Author(s):  
Vladyslav Shtabovenko

The width difference ΔΓs that can be extracted from lifetime measurements of the two mass eigenstates of the Bs0−B¯s0 system is one of the key flavor precision observables and has been experimentally measured at per cent level accuracy. The current theory prediction is much less accurate and a sizable reduction of scale uncertainties can only be achieved by means of evaluating the uncalculated 2- and 3-loop QCD corrections. This is precisely the issue addressed in this work where we report on the results that have been obtained so far and explain some of the technical and conceptual challenges that we encountered in the course of our calculations.


2021 ◽  
Vol 25 ◽  
pp. 13-32
Author(s):  
Pilar Aumente Rivas

The reflection on the collaborative calls for a review of the contemporary roots of the concept (Kropotkin) and its development (Ostrom). It is the core of our study. Another section is dedicated to some theorists of Cultural Districts (Sacco, Ferilli) who seem to make possible the passage from the "isolated one-subject" to the "we-working together-collective", reviewing their level of differentiation. The objectives of the study are: to characterize the scope of the collaborative through its sources; select some of the main notions of the collaborative universe; revisit them highlighting features provided; point out aspects of the current theory of the Districts, in order to the compatibility or discrepancy with the collaborative. The theoretical focus of the research calls for a methodology based on the management of the legacy of knowledge that supports collaborative actions, as well as the development of cultural districts. Sequencing supposes rereading in historical development of source texts of key, founding and current collaborative theories; selection of fragments that characterize the identifying notions; choice of theorists of Cultural Districts that allow a suitable analysis with respect to objectives; critical presentation of the theoretical aspects of compatibility or disparity from the theory of Districts, in relation to the collaborative world. La reflexión sobre lo colaborativo insta a la revisión de las raíces contemporáneas del concepto (Kropotkin) y su desarrollo (Ostrom). Es el núcleo de nuestro estudio. Otra sección está dedicada a algunos teóricos de Distritos Culturales (Sacco, Ferilli) que parecen posibilitar el paso del “uno-sujeto aislado”, al “nosotros-trabajando juntos-colectivo”, Revisando su nivel de diferenciación.  Los objetivos del estudio son: caracterizar el ámbito de lo colaborativo a través de sus fuentes; seleccionar algunas de las principales nociones del universo colaborativo; revisitarlas destacando características aportadas; señalar aspectos de la teoría actual de los Distritos, en orden a la compatibilidad o discrepancia con lo colaborativo. El enfoque teórico de la investigación insta a una metodología basada en el manejo del legado de conocimientos que sustenta las acciones colaborativas, así como el desarrollo de los distritos culturales. La secuenciación supone relectura en desarrollo histórico de textos-fuente de teorías colaborativas clave, fundadoras y actuales; selección de fragmentos que caractericen las nociones identificativas; elección de teóricos de Distritos Culturales que posibiliten un análisis idóneo respecto a objetivos; presentación crítica, de los aspectos teóricos de compatibilidad o disparidad desde la teoría de los Distritos, en relación al mundo colaborativo.


MAUSAM ◽  
2021 ◽  
Vol 42 (2) ◽  
pp. 151-154
Author(s):  
A. K. MUKHERJEE

A new theory, using kinetic theory of gases, for dissolution of gaseous air pollutants and applicable both for wash out and rain out processes has been proposed. It has been shown that the current theory of wash out of gases given by Hales (1972) is a special case of the general theory proposed here.  


2021 ◽  
pp. 002216782110627
Author(s):  
Hyung Chol Yoo ◽  
Abigail K. Gabriel ◽  
Sumie Okazaki

Research within Asian American psychology continually grows to include a range of topics that expand on the heterogeneity, hybridity, and multiplicity of the Asian American psychological experience. Still, research focused on distinct racialization and psychological processes of Asians in America is limited. To advance scientific knowledge on the study of race and racism in the lives of Asian Americans, we draw on Asian critical race theory and an Asian Americanist perspective that emphasizes the unique history of oppression, resilience, and resistance among Asian Americans. First, we discuss the rationale and significance of applying Asian critical race theory to Asian American psychology. Second, we review the racialized history of Asians in America, including the dissemination of essentialist stereotypes (e.g., perpetual foreigner, model minority, and sexual deviants) and the political formation of an Asian American racial identity beginning in the late 1960s. We emphasize that this history is inextricably linked to how race and racism is understood and studied today in Asian American psychology. Finally, we discuss the implications of Asian critical race theory and an Asian Americanist perspective to research within Asian American psychology and conclude with suggestions for future research to advance current theory and methodology.


Author(s):  
Svitlana Petrivna Onishchenko ◽  
Oleksiy Mykolayovych Melnyk ◽  
Andriy Oleksandrovych Voloshin ◽  
Yevgen Volodymyrovych Kalinichenko ◽  
Sergey Valentinovich Zayats

Increasing relevance of the problem of energy conservation and use of alternativesources of energy in connection with global and local resource crises led to the formation of adeveloped system of international standards in the field of energy management, which is aimed atregulating and disclosing the content of the principles of energy efficient processes and development.Rational policy in enterprises of various industries and the implementation of energy-savingmeasures, particularly in the maritime transport. The dynamics of implementation of projects aimedat increasing the efficiency of energy use is growing steadily at different levels and in different sectorsof industry. It is widespread in the fields of design, modernization and reconstruction of energyefficient buildings and structures, construction of industrial infrastructure elements, technologicalproduction processes. Implementation of such projects is a priority line of activity for enterprises andcompanies of various types of economic activity. Accordingly, the leading sectors of industry develop strategies to improve environmental safety and energy efficiency - ship navigation is no exception.Indeed, the process of increasing energy efficiency is achieved by reducing fuel consumption, whichwithout exception leads to a reduction in the amount of waste products discharged into theatmosphere. Therefore, the problems of energy efficiency in order to increase requirements forenvironmental safety of transport and increasing responsibility of shipowners become the centralobject of research of current theory and practice of operation of maritime transport means. Anotherurgent issue is the improvement of universal principles of energy efficiency within the framework ofindividual ship-owning companies and the development of tools for economic analysis of energyefficiency of the own fleet, search for new ways to form professional competencies of shipcrewmembers in the field of energy conservation.


2021 ◽  
pp. 293-324
Author(s):  
Adam Gyenes ◽  
◽  
Luis F. Santos ◽  

The use of TED talks in EAP has gained popularity in recent years and they are promoted through coursebooks as a means of simultaneously developing listening and critical thinking skills. However, a traditional comprehension approach to teaching listening; one that focuses on testing lower-order thinking skills through discrete questions may be inadequate as a gateway into a critical consideration of broader issues for second language learners. With the practical purpose of developing a teaching approach to using TED talks informed by current theory, the chapter begins with a consideration of how critical thinking processes and top-down and bottom-up listening processes can be integrated into a singular model. Based on this framework, a genre analysis of the TED talk is made by taking a learner’s perspective in order to identify cognitive and affective barriers to listening that may restrict opportunities for critical thinking. In the discussion that follows, five activities are suggested for use with TED talks in listening classes that support top-down and bottom-up listening processes, and which set students up to analyse and evaluate the thesis and underlying structure of a TED talk, providing a solid foundation from which to approach discussion topics critically and reflectively.


2021 ◽  
Vol 28 (3-4) ◽  
pp. 233-252
Author(s):  
Amanda L. du Plessis

Abstract This theoretical paper reviews the current theory about curriculum transformation and renewal in higher education in Africa and, in particular, South Africa. Although the findings are applicable to different universities, the pedagogical approach of North-West University will be the focus. The aim is to understand curriculum responsiveness pertaining to decolonisation and sustainable development that can align with the African Union’s proposed Agenda 2063. The epistemology is from a practical public theological paradigm. A single-system research method has been followed to integrate current research about tertiary education curriculum transformation with the latest practice theory. Three different aspects are explored, namely how Agenda 2063 is applicable to higher education in a post-colonial context, the fibre of human relations based on Nagy’s contextual theory, and the curriculum as a powerful tool for change. The paper concludes that lecturers and students can join forces in growing towards the Africa they want by active experiential student-centred pedagogy.


Author(s):  
Irina V. Shaposhnikova

The article discusses the psycholinguistic explication of the phenomenon of the Russian language personality (RLP) on the experimentally obtained associative-verbal-network (AVN) model at the end of the XXth century and the methodological contribution of the RLP conception, proposed by Yu.N. Karaulov, to the development of a general theory of language. As a human-species-specific universal, LP can be studied within an interdisciplinary approach which suggests a complementary synthesis of the latest methodological and factological achievements in different branches of human sciences. All the facets of language functioning (systemic-structural, historical-cultural, psychological, and socio-communicative), that were highlighted earlier by Yu.N. Karaulov, are subject of interdisciplinary consideration, integrated within the conception of LP. Thus, conditions are created for a complementary use of the structural theory of language (whereby the language is viewed as an external object ) and a current theory of language within a person . Network approaches, widely used in a number of human sciences, help to identify different aspects of human formation. Yu.N. Karaulov proved that LP can be explicated only as a culturally-specific variety on the AVN model. This allows the author of the article to refer to the notion of intentional personality , that has been proposed by ethnologists and cultural anthropologists for their studies of the motivational aspects in socio-communicative interactions within a single cultural community. The author finds it appropriate to extrapolate the concept intentionality to the LP as a sense-generating and sense-organizing entity setting more-or-less flexible systematic stability to the persons internal image of the world and projecting this, often illogically organized, systematicity to the AVN. The advantages of using AVN model, in contrast to other network approaches, consist in its being capable to reflect the dominant socio-communicative attitudes which developed spontaneously by a natural order of emergence as the result of socialization of the studied community members. The author proceeds from an assumption about semantic accentuations of the LP as the units of analysis which are represented by fluctuations of associative dominants at the macrostructure and microlevels of the AVN; the empirical findings collected in the AVN may be regarded as initial data encouraging investigators to build hypotheses about the psychodynamic processes reflecting variability in socio-communicative environment. The range of fluctuations of the associative dominants at the turn of the century is shown as the statistic dimensions of the RLP in the network from the newest Russian regional associative database СИБАС1 [2008-2013] and СИБАС2 [2014-2020] in comparison with the Russian associative thesaurus (RAS) previously obtained by Russian psycholinguists, with Yu.N. Karaulovs active participation, in the years of perestroika [1988-1997].


2021 ◽  
Author(s):  
◽  
Andrea Dickens

<p>Differences in dynamic capabilities (DCs) help explain firms’ abilities to change. DCs research has explored what DCs might be and generic categorisations of them after they have emerged, but little light has been thrown on the specific practices that enable or inhibit their emergence. This study explores how DCs emerge and why firms might develop DCs differently under the same market conditions.   This thesis sought to understand these questions and respond to calls for longitudinal empirical studies to extend DC theory by studying the paths of four professional services firms in New Zealand over three decades. Using a multi-case study design and thematic analysis, this research applied Teece’s (2007) framework of sensing, seizing and transforming capabilities to identify the presence of DCs within each case, before attempting to identify the enablers and inhibitors influencing the development of such capabilities. While elements of each generic class of DC were evident in each case, the findings suggest that in order to utilise DCs to adapt effectively to environmental changes, a firm must deploy all three classes of capabilities at the same time.   This research contributes to the DC literature by proposing a prioritised typology of antecedents that may help stimulate Teece’s sensing, seizing and transforming DCs, while identifying the rigidities that could inhibit their development. The empirical results reported on in this thesis suggest that similar firms’ development of DCs may be different because of idiosyncratic leadership and culture that can limit a firm’s ability to perceive the importance of DCs. Other characteristics that inhibit the development of DCs include centralised, non-participative cultures and high internal (or inward looking) orientation. These results extend current theory about triggers for developing DCs by identifying that the strongest triggers may be either serious macro-economic events or internally driven by firm-defined goals or strategies.</p>


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