scholarly journals The Principle of Characterization as a Systemic Paradigm of Safety: Experiments and Applications

2018 ◽  
Vol 10 (1) ◽  
pp. 303-318
Author(s):  
Tadeusz Krupa

Abstract This work is devoted to promoting the principle of characterization, treated as a systemic paradigm binding in an integral whole the functional and structural aspects of any organization, under-stood as a deliberate relationship of related resources. The principle of characterization and the specific characterization theories built on its basis belong to the methodology of systemic research. Its essence is the axioms contained in model Ψa of the proper functioning, which are assigned to the relationships contained in model Ψb of the structure of this organization. The functional-structural paradigm considered is characteristic primarily of project activity in which an efficient structural response to a certain problem of the correct (safe) functioning of the organization as a whole or its considered part is sought after.

2019 ◽  
Vol 64 (1(251)) ◽  
pp. 127-138
Author(s):  
Grażyna Szyling

The key aim of the paper is to present a scientific review of Dorota Klus-Stańska’s book, Paradygmaty dydaktyki. Myśleć teorią o praktyce. The conducted analysis was subjected to unravelling these substantive and structural aspects of the textbook which reinvigorate the understanding of didactics as a scientific discipline, violate the matrices-based typologies and knock the reader out of automatisms. Conclusions from the analysis provided substantiation for proposing a classification of didactics reaching beyond their paradigmatic assignment, yet not discordant with it. Taking advantage of the relationship of particular types of didactics with their (a) paradigmatic assignment and (b) educational practice, the author distinguished stable, borderline and in statu nascendi didactics, posing at the end a question as to them being open to interparadigmatic translation.


Africa ◽  
1968 ◽  
Vol 38 (1) ◽  
pp. 26-46 ◽  
Author(s):  
W. D. Hammond-Tooke

Opening ParagraphThis paper had its genesis in an attempt to understand certain aspects of the ancestor cult of the Mpondomise, a Cape Nguni people of the Transkei, South Africa. Like all Southern Bantu, the Mpondomise have only a vague idea of a supreme being and effective ritual behaviour is directed towards the shades of deceased agnatic forebears, the izinyanya. It was immediately obvious that any understanding, particularly of the structural aspects of the cult, depended on a clear picture of the lineage, of what is, in effect, its ‘congregation’ (in the Durkheimian sense). It is an anthropological truism that ancestor cults exhibit to a high degree that congruence between ritual behaviour and social structure emphasized by Durkheim. In strong contrast to the universalistic world religions, recruitment to the cult group is in terms of a kinship idiom, either through birth, marriage, or adoption, the beings to whom worship is directed are highly differentiated and structurally defined, and their sphere of influence is similarly bounded. There is evidence that the ancestor cult is inversely correlated with a highly developed cult of a supreme being and that sacrifice to the manes tends to symbolize commensalism (as one would expect with erstwhile kinsmen) rather than the explicit identification of the worshipper with the offering found, for example, both among the Nuer, with their conceptualization of an omnipotent High God, and, in some of its symbolism at least, in the Christian Eucharist. Be this as it may, ancestor cults have been particularly congenial to the structural interests of modern social anthropologists and the growing number of detailed studies has greatly increased our knowledge of this religious form. It was thus essential, as a preliminary exercise, to define the congregation of the cult, the locus of ritual authority within it, and the relationship of the living members of the group to the dead.


Author(s):  
Cumaraswamy Vipulanandan ◽  
Srisothinathan Pakeetharan

In this study, a piezoresistive structural sensor (multifunctional material) was developed and a cantilever beam element with varying cross sections was designed and tested to measure low pressures for use during disaster events such as hurricanes. The piezoresistive structural polymer composite material developed in this study had a compressive strength of over 65 MPa (9425 psi), considered to be stronger than the standard construction materials. Also the piezoresistive material was over 30 times more sensitive than the resistance strain gages in detecting strain. The compressive stress-strain relationship of the polymer composite was modeled using a non-linear relationship. The constitutive behavior of the piezoresistive material was modeled using incremental nonlinear stress-resistivity relationship. The structural response of the cantilever beam with varying cross sections was analyzed using the finite element method. With the newly developed cantilever beam element it was possible to magnify the piezoresistive response and detect applied pressure as small as 1.4 kPa (∼0.2 psi) with a change in electrical resistivity of 0.5%.


Aerospace ◽  
2005 ◽  
Author(s):  
Victor Birman

Nonlinear stress-strain relationships (physical nonlinearity) may have a large effect on the structural response of piezoelectric sensors and actuators. The paper addresses the subject concentrating on cylindrical piezoelectric rods that experience vibrations as a result of an alternating electric field applied in the axial direction. The problem considered in the paper is important in connection with design of piezoelectric transducers. It is shown that neglecting the non-linear stress-strain relationship of the piezoelectric material can result in a significant error in the predicted response of the transducer.


1979 ◽  
Author(s):  
G.A. Marguerie

The important role of Ca++ in the clotting of fibrinogen has been known for some time. In order to elucidate the mechanism by which this cation influences the structure and the function of this protein the Ca++ -fibrinogen interaction has been examined. Equilibrium dialysis experiments at pH 7.4 have shown that fibrinogen-possesses three Ca++ binding sites of high affinity with an apparent association constant Kd = 2 × 10-6 M. The specificity for Ca++ was established and a partial identification of the binding sites demonstrated that, Ca++ is tightly bound to the protein through a chelate system. Binding studies at different pH also demonstrated that these sites do not behave as homogeneous population and at least two distinct classes of sites could be demonstrated. Whereas physicochemical analysis established that the binding of Ca++ to fibrinogen does not entail a gross overall conformational change, protection against denaturation could be demonstrated indicating that Ca++ is part of the structure of the fibrinogen molecule and might stabilize a more compact molecular conformation which is structurally and functionally different. This was corroborated by studies of the influence of this cation on two basic reactions of fibrinogen, namely proteolysis by thrombin and plasmin. It was found that: 1) resistance to proteolysis by plamin is observed when Ca++ is bound to fibrinogen. The rate of the cleavage of the earliest plasm in-susceptible bound is reduced, 2) Ca++ catalyzes the proteolytic reaction between thrombin and fibrinogen. Based upon these observations a proposal is tentatively made to explain the role of Ca++ on the structure:function relationship of fibrinogen.


2021 ◽  
Vol 26 ◽  
pp. 223-249
Author(s):  
Renger Evert De Bruin

Administration by mail: The correspondence of the Utrecht land commander with his staff, 1753‒1845   The correspondence between the land commanders of the Teutonic Order’s Bailiwick of Utrecht and their staff, the stewards and clerks, provides a detailed insight into the institution’s functioning between 1753 and 1845. The Bailiwick was administered from the Teutonic House in Utrecht by a resident steward who mostly communicated with his superior in writing, as the latter lived at a considerable distance and came to Utrecht at most once a year. A relationship of trust was essential for the proper functioning of this arrangement. In the first decades after the start of a reorganisation in 1753, this was certainly the case, but the lack of this relationship of trust led to major problems later on. The analysis of the correspondence paints a picture of the management of dispersed large estates in the pre-industrial era, before major advancements in both transportation and communication. The case study is also important for the knowledge of the Military Orders after the Reformation and during the Age of Revolution, when these institutions were seriously threatened. Additionally, the Bailiwick of Utrecht did not escape abolition by Napoleon, but this was reversed in 1815. The increasingly hostile correspondence between the land commander and the steward about the liquidation procedures in 1812‒1813 provides insight into the survival mechanism of the Bailiwick of Utrecht. The research presented in this article is part of a larger study of the Bailiwick of Utrecht between 1640 and the middle of the twentieth century.


2019 ◽  
pp. 105-142
Author(s):  
Sarah Ehlers

This chapter historicizes and theorizes an alternative record of lyric practice that emerged in the Depression but has been obscured. Specifically, the writings of communist poets Genevieve Taggard and Edwin Rolfe allow for an exploration of alternate conceptions of the poetic lyric, where lyric becomes a means to reinvent structural aspects of self in relation to the dialectics of historical change. After demonstrating how Rolfe’s engagements with the romantic lyric reasserted traditional terms of lyrical agency on the historical ground of capitalist crisis, the chapter mobilizes Taggard’s notion of a “lyric effect” to provide a different understanding of the contours of the lyric subject as well as the links between experiments with lyric and forms of collective action. Subsequent sections take up important aspects of Depression poetic discourses: the reception of Rolfe’s poetry in the left press; Taggard’s and Rolfe’s engagements with Romanticism, especially Walt Whitman’s legacy; and Taggard’s interest in music and radio technology. Across these topics, the chapter demonstrates how abstracted versions of the romantic lyric, choral music, and oral recitation become “lyric.” The final section turns to the contemporary reception of Rolfe’s poetry to forward a methodological polemic about the relationship of lyric reading to historical practice.


Author(s):  
M. Yu. Gribanova-Podkina

In the educational and project activities, an important area is the formation of competencies associated with the planning, monitoring and adjustment of the work plan. An effective means of structuring a project implementation plan is to use technology for modeling business processes. Using the notation of functional modeling IDEF0, a description is given of the tasks that must be solved during the project. This makes it possible to allocate the necessary resources and the results obtained at each stage of the work, as well as present a holistic picture of all activities in the relationship of all stages. Each task, business process can be considered as an independent project with its own characteristics. It is possible to use the decomposition of business processes, which is also present in the IDEF0 notation. In educational and project activities, this approach is applied for the first time. It allows students to make the planning process simpler and more understandable by structuring the project work plan and visualizing it in the form of graphic diagrams. The variety of software and Internet services that allow you to create IDEF0 diagrams is an additional argument in favor of using the proposed methodology in educational and project activities.


1979 ◽  
Author(s):  
G Marguerie

The important role of Ca++in the clotting of fibrinogen has been known for some time. In order to elucidate the mechanism by which this cation influences the structure and the function of this protein the Ca++-fibrinogen interaction has been examined. Equilibrium dialysis experiments at pH 7.4 have shown that fibrinogen possesses three Ca++ binding sites of high affinity with an apparent association constant Kd = 2 × 10-6M. The specificity for Ca++was established and a partial identification of the binding sites demonstrated that Ca++is tightly bound to the protein through a chelate system. Binding studies at different pH also demonstrated that these sites do not behave as homogeneous population and at least two distinct classes of sites could be demonstrated. Whereas physicochemical analysis established that the binding of Ca++to fibrinogen does not entail a gross overall conformational change, protection against denaturation could be demonstrated indicating that Ca++is part of the structure of the fibrinogen molecule and might stabilize a more compact molecular conformation which is structurally and functionally different. This was corroborated by studies of the influence of this cation on two basic reactions of fibrinogen, namely proteolysis by thrombin ana plasmin. It was found that: 1) resistance to proteolysis by plamin is observed when Ca++ is bound fibrinogen. The rate of the cleavage of the earliest plasmin-susceptible bound is reduced, 2) Ca++ catalyzes the proteolytic reaction between thrombin and fibrinogen. Based upon these observations a proposal is tentatively made to explain the role of Ca++ on the structure:function relationship of fibrinogen.


2013 ◽  
Vol 45 (2) ◽  
pp. 133-144
Author(s):  
Piotr Mleczko ◽  
Maciej Kozak ◽  
Maria Ławrynowicz ◽  
Grzegorz Dubiel

Phylogenetic analyses place <em>Octaviania asterosperma</em> in the Boletales, with <em>Leccinum</em> being the closest relative. Results of the structural investigation of <em>O. asterosperma</em> ectomycorrhiza with <em>Fagus</em> sylvatica confirm this systematic position. In Europe the species is an ectomycorrhizal partner of broad-leaved trees, such as <em>Carpinus, Corylus, Fagus, Quercus</em> and <em>Tilia</em>. This paper aims at presenting the new data to the distribution of <em>O. asterosperma</em> in Central Europe. The description of the basidiocarps discovered in Poland in the recent years is also given, together with evidence for the parasitic relationship of <em>Sepedonium laevigatum</em> with <em>O. asterosperma</em>. We also present the information concerning all known localities of the species in Poland and its distribution map. Data on the ecologz, distribution and status <em>O. asterosperma</em> in Europe, and some structural aspects of basidiocarps and spores, are also summarized.


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