bluuebunny/crossref_metadata_2025 huggingface dataset:
Perilaku Pencarian Informasi Mahasiswa Universitas Islam Nahdlatul Ulama Jepara terkait Skripsi
Authors: Ramadhan Achmad Nur , Irhandayaningsih Ana
Published: May 2023

Penelitian ini berjudul Perilaku Pencarian Informasi Mahasiswa Universitas Islam Nahdlatul Ulama Jepara terkait Skripsi dengan tujuan untuk menganalisis perilaku pencarian informasi mahasiswa Universitas Islam Nahdlatul Ulama Jepara dalam memenuhi kebutuhan informasi pada proses penyusunan skripsi. Metode penelitian yang digunakan dalam penelitian ini adalah metode penelitian kualitatif dengan pendekatan studi kasus. Metode pengambilan data berupa observasi dan wawancara secara langsung. Informan dalam penelitian ini adalah Mahasiswa Universitas Nahdlatul Ulama Jepara angkatan 2018. Metode analisis data yang digunakan pada penelitian ini adalah reduksi data, penyajian data, dan penarikan kesimpulan. Perilaku pencarian informasi pada penelitian ini menggunakan model yang dikemukakan oleh David Ellis yang terdapat 8 tahapan diantaranya: Starting, Chaining, Browsing, Differentiating, Monitoring, Extracting, Verifying, Ending. Hasil penelitian menunjukan bahwa perilaku pencarian informasi mahasiswa Universitas Islam Nahdlatul Ulama Jepara memiliki tahapan-tahapan yang sama namun dari semua tahapan yang dilakukan mahasiswa terdapat beberapa perbedaan dalam melakukan pencarian informasi. Hal tersebut memperlihatkan bahwa perilaku pencarian informasi yang dimiliki mahasiswa bervariasi sesuai dengan sumber informasi yang sedang digunakan. Dalam kegiatan pencarian informasi, tidak semua mahasiswa dapat melakukannya dengan lancar. Terkadang, beberapa mahasiswa mengalami hambatan dan kesulitan. Hambatan tersebut diantaranya adalah mahasiswa merasa tidak puas dengan informasi yang diperoleh, kurangnya efisiensi dalam pencarian informasi dan keakuratan informasi.
An IT-OT integration concept for flexible process automation
Authors: Azarmipour Mahyar , Hana Ramy , Kleinert Tobias
Published: May 2023

Industry 4.0 is a paradigm that plays a central role in the development of future automation systems. A new generation of industrial automation aims to increase the agility of automation systems. In this context, cooperation with the IT world is an important prerequisite to achieving the requested agility. Therefore, new architectures and solutions have to be developed to realize cooperation between automation and IT systems. The goal of this work is to present for the process industry an architectural design for industrial control systems in order to provide them with a higher level of connectivity and agility.
Towards numerical control of machine tools from the edge cloud
Authors: Susen Christoph , Storms Simon , Brecher Christian
Published: May 2023

A concept has been developed which enables the virtualization and consolidation of NC controllers for machine tools. By decoupling control hardware and software, dynamic scaling of computing power depending on the complexity of the control functions becomes possible. The use of monolithic and over-dimensioned control systems, which are most often not fully exploited but no longer sufficient when new requirements arise, is avoided. Additionally, economic advantages might be exploited by consolidating multiple controllers in an edge cloud. Initial experiments have shown that purely software-based solutions on standard IT hardware are suitable for reliably achieving the required cycle times.
Analysis, Decomposition, and Unity in Wittgenstein's Tractatus
Authors: Spinney Oliver Thomas
Published: May 2023

I argue, through appeal to the distinction between analysis and decomposition described by Dummett, that Wittgenstein employs both of those notions in the Tractatus. I then bring this interpretation to bear upon the issue of propositional unity, where I formulate an objection to the views of both Leonard Linksy and José Zalabardo. I show that both Linsky and Zalabardo fail to acknowledge the distinction between analysis and decomposition present in the Tractatus, and that they consequently mischaracterise Wittgenstein’s position with respect to propositional unity.
Wittgenstein's Reductio
Authors: Nir Gilad
Published: May 2023

By means of a reductio argument, Wittgenstein’s Tractatus calls into question the very idea that we can represent logical form. My paper addresses three interrelated questions: first, what conception of logical form is at issue in this argument? Second, whose conception of logic is this argument intended to undermine? And third, what could count as an adequate response to it? I show that the argument construes logical form as the universal, underlying correlation of any representation and the reality it represents. I further show that the argument seeks to undermine core commitments of Frege’s and Russell’s. But the reductio, as I read it, is not intended to establish the falsity of any of their specific assumptions. Rather, its aim is to make manifest the indeterminacies that underlie the language in which these assumptions are framed, and establish the need for a transformation of that language. So understood, Wittgenstein’s argument exemplifies his idea that philosophy is not a theory, but an activity of elucidation. The interpretation I propose bears on one of the central debates in the literature, namely how we should understand Wittgenstein’s contention that his elucidations succeed despite being nonsensical.
Review of The Historical and Philosophical Significance of Ayer’s Language, Truth and Logic
Authors: Bentley Joseph
Published: May 2023

~
Frege, Thomae, and Formalism
Authors: Lawrence Richard
Published: May 2023

Mathematical formalism is the the view that numbers are “signs” and that arithmetic is like a game played with such signs. Frege’s colleague Thomae defended formalism using an analogy with chess, and Frege’s critique of this analogy has had a major influence on discussions in analytic philosophy about signs, rules, meaning, and mathematics. Here I offer a new interpretation of formalism as defended by Thomae and his predecessors, paying close attention to the mathematical details and historical context. I argue that for Thomae, the formal standpoint is an algebraic perspective on a domain of objects, and a “sign” is not a linguistic expression or mark, but a representation of an object within that perspective. Thomae exploits a shift into this perspective to give a purely algebraic construction of the real numbers from the rational numbers. I suggest that Thomae’s chess analogy is intended to provide a model for such shifts in perspective.
Review of Wittgenstein’s Critique of Russell’s Multiple Relation Theory of Judgement
Authors: Lebens Samuel
Published: May 2023

~
Resolute Readings of Wittgenstein and Nonsense
Authors: Ulatowski Joseph
Published: May 2023

The aim of this paper is to show that a corollary of resolute readings of Wittgenstein’s conception of nonsense cannot be sustained. First, I describe the corollary. Next, I point out the relevance to it of Wittgenstein’s discussion of family resemblance concepts. Then, I survey some typical uses of nonsense to see what they bring to an ordinary language treatment of the word “nonsense” and its relatives. I will subsequently consider the objection, on behalf of a resolute reading, that “nonsense” is a term of philosophical criticism. Finally, I conclude that resolute readings have not sufficiently accounted for how nonsense behaves in our language; they have failed to heed Wittgenstein’s warning: “don’t think, but look!”
Coming to America: Carnap, Reichenbach and the Great Intellectual Migration. Part II: Hans Reichenbach
Authors: Verhaegh Sander
Published: May 2023

In the late 1930s, a few years before the start of the Second World War, a small number of European philosophers of science emigrated to the United States, escaping the increasingly perilous situation on the continent. Among the first expatriates were Rudolf Carnap and Hans Reichenbach, arguably the most influential logical empiricists of their time. In this two-part paper, I reconstruct Carnap’s and Reichenbach’s surprisingly numerous interactions with American academics in the decades before their move in order to explain the impact of their arrival in the late 1930s. This second part traces Reichenbach’s development and focuses on his frequent interactions with American academics throughout the 1930s. I show that Reichenbach was quite ignorant about developments in Anglophone philosophy in the first stages of his career but became increasingly focused on the United States from the late 1920s onwards. I reconstruct Reichenbach’s efforts to find a job across the Atlantic and show that some of his English publications—most notably Experience and Prediction—were attempts to change the American narrative about logical empiricism. Whereas U. S. philosophers identified scientific philosophy with the views of the Vienna Circle, Reichenbach aimed to market his probabilistic philosophy of science as a subtler alternative.
Carnap and Quine on Sense and Nonsense
Authors: Smith James Andrew
Published: May 2023

I offer an interpretation of Carnap and Quine’s views on cognitive significance and insignificance. The basic idea behind their views is as follows: to judge an expression is insignificant is to recommend it not be used in or explicated into languages used to express truth-valued judgments in inquiry; to judge an expression is significant is to recommend it be used in or explicated into such languages. These judgments are pragmatic judgments, made in light of purposes for language use in inquiry. For Carnap at least, these pragmatic judgments are non-cognitive. This basic idea is only a roughly correct statement of their views. This is because the details of the scientific languages they recommend for inquiry are necessary to understand their views and the way they understand their own views. Even so, I offer two reasons to suggest that this basic idea is worthy of our consideration today. First, it provides a conception of significance that captures the natural thought that epistemological concerns can lead us to consider expressions to be insignificant without requiring an objectionable form of verificationism. Second, if we appeal also to Carnap and Quine’s pluralistic attitude toward explication, we can make a pragmatic judgment that an expression is insignificant while judging it to be significant on a distinct explication of significance fit for describing and explaining natural language.
Introduction
Authors: Shieh Sanford , Floyd Juliet
Published: May 2023

In this introduction we present the principal themes of the special issue and highlight the main interpretive theses of the contributions.
Frege, Hankel, and Formalism in the Foundations
Authors: Lawrence Richard
Published: May 2023

Frege says, at the end of a discussion of formalism in the Foundations of Arithmetic, that his own foundational program “could be called formal” but is “completely different” from the view he has just criticized. This essay examines Frege’s relationship to Hermann Hankel, his main formalist interlocutor in the Foundations, in order to make sense of these claims. The investigation reveals a surprising result: Frege’s foundational program actually has quite a lot in common with Hankel’s. This undercuts Frege’s claim that his own view is completely different from Hankel’s formalism, and motivates a closer examination of where the differences lie. On the interpretation offered here, Frege shares important parts of the formalist perspective, but differs in recognizing a kind of content for arithmetical terms which can only be made available via proof from prior postulates.
Frege's Curiously Two-Dimensional Concept-Script
Authors: Elkind Landon D. C.
Published: May 2023

In this paper I argue that the two-dimensional character of Frege’s Begriffsschrift plays an epistemological role in his argument for the analyticity of arithmetic. First, I motivate the claim that its two-dimensional character needs a historical explanation. Then, to set the stage, I discuss Frege’s notion of a Begriffsschrift and Kant’s epistemology of mathematics as synthetic a priori and partly grounded in intuition, canvassing Frege’s sharp disagreement on these points. Finally, I argue that the two-dimensional character of Frege’s notations play the epistemological role of facilitating our grasp of logical truths (foundational and derived) independently of intuition. The rest of this paper critically evaluates Frege’s view and discusses Macbeth’s (2005) account.
Logical Concepts vs. Logical Operations
Authors: Rohr Tabea
Published: May 2023

In what follows, the difference between Frege’s and Schröder’s understanding of logical connectives will be investigated. It will be argued that Frege thought of logical connectives as concepts, whereas Schröder thought of them as operations. For Frege, logical connectives can themselves be connected. There is no substantial difference between the connectives and the concepts they connect. Frege’s distinction between concepts and objects is central to this conception, because it allows a method of concept formation which enables us to form concepts from the logical connectives alone. Schröder in contrast unifies the distinction between concepts and objects (which he calls elements and relatives), but keeps the distinction between logical connectives and what they connect. It will be argued that Frege’s particular way of perceiving logical connectives is crucial for his foundational project.
The Fate of the Act of Synthesis
Authors: Rump Jacob
Published: May 2023

I investigate the role of the subject in judgment in Kant, Frege, and Husserl, situating it in the broader and less-often-considered context of their accounts of presentation (Vorstellung) as well as judgment. Contemporary philosophical usage of “representation” tends to elide the question of what Kant called the constitution of content, because of a reluctance, traced to Frege’s anti-psychologism, to attend to subjectivity. But for Kant and Husserl, anti-psychologism allows for synthesis as the subjective act necessary for both “mere presentation” and judgment. In Begriffshrift, Frege alludes to a significant logical role for the subjective act of judgment, and in later work, traces of this logical role remain in the intensional notions of grasping a thought and judging as acknowledging its truth. But Frege’s anti-psychologism blocks interpreting these subjective notions in term of synthesis. Although similar in certain ways to Frege and equally anti-psychologistic, Husserl’s theory of judgment in the Logical Investigations maintains a role for subjective syntheses for presentations and judgments, and goes beyond Kant in allowing for a kind of objectivity at the level of non-judgment presentations. These two great anti-psychologists at the dawn of the parallel heydays of linguistic and phenomenological analysis are thus differentiated by the fates they assign to the act of synthesis.
Kripke’s Wittgenstein and Semantic Factualism
Authors: Šumonja Miloš
Published: May 2023

Recently, two new portrayals of Kripke’s Wittgenstein (KW) have emerged. Both understand KW as targeting the Tractarian picture of semantic fact as a speaker’s mental representation of the truth-conditions of the sentences he uses. According to the factualist interpretation, KW holds that meaning ascriptions are legitimate descriptions because semantic facts are not entities that explain people’s linguistic behavior. The second, Alex Miller’s non-standard non-factualist interpretation, sees KW as claiming that because no fact can explain our linguistic behavior, meaning ascriptions express a speaker’s attitudes towards his interlocutors rather than stating what they mean. This paper advances the minimal factualist interpretation by elaborating two points: that Miller’s reading of the skeptical argument contradicts semantic non-factualism; and that KW’s view of meaning is based on a primitivist rendition of the skeptic’s insight that nothing justifies our use of language, which allows him to assert that semantic facts exist simply because we ordinarily say so.
A Critical Discussion of the “Memory-Challenge” to Interpretations of the Private Language Argument
Authors: Fan Zhao
Published: May 2023

In a recent paper, Francis Y. Lin proposes a “memory-challenge” to two main interpretations of Wittgenstein’s private language argument: the “no-criterion-of-correctness” interpretation and the “no-stage-setting” interpretation. According to Lin, both camps of interpretation fail to explain why a private language is impossible within a short time period. To answer the “memory-challenge”, Lin motivates a grammatical interpretation of the private language argument. In this paper, I provide a critical discussion of Lin’s objection to these interpretations and argue that Lin’s objection fails. In the case of the “no-stage-setting” interpretation, Lin suggests that the private language user can establish a stage within a short time period. However, I show that this stage is insufficient for a private language to be used correctly. In the case of the “no-criterion-of-correctness” interpretation, Lin believes that since memory is reliable within a short period, no criterion is needed for the correct use of a private language. However, I argue that his objection attacks a strawman, since the interpretation concerns the structure of justification, rather than the weakness of memory itself. I conclude with a critical discussion on memory and primitive expressions, the latter of which are crucial to Wittgenstein’s approach to public language. This discussion will help to draw a sharp line between private language and public language, and cast some doubt on Lin’s grammatical interpretation.
Review of Irad Kimhi, Thinking and Being
Authors: Narboux Jean Philippe
Published: May 2023

~
Review of José Zalabardo, Representation and Reality in Wittgenstein's Tractatus
Authors: Eisenthal Joshua
Published: May 2023

~
An Argument for Completely General Facts
Authors: Elkind Landon D. C.
Published: May 2023

In his 1918 logical atomism lectures, Russell argued that there are no molecular facts. But he posed a problem for anyone wanting to avoid molecular facts: we need truth-makers for generalizations of molecular formulas, but such truth-makers seem to be both unavoidable and to have an abominably molecular character. Call this the problem of generalized molecular formulas. I clarify the problem here by distinguishing two kinds of generalized molecular formula: incompletely generalized molecular formulas and completely generalized molecular formulas. I next argue that, if empty worlds are logically possible, then the model-theoretic and truth-functional considerations that are usually given address the problem posed by the first kind of formula, but not the problem posed by the second kind. I then show that Russell’s commitments in 1918 provide an answer to the problem of completely generalized molecular formulas: some truth-makers will be non-atomic facts that have no constituents. This shows that the neo-logical atomist goal of defending the principle of atomicity—the principle that only atomic facts are truth-makers—is not realizable.
Notions of Existence in Frege
Authors: Rami Dolf
Published: May 2023

In this paper, I aim to present the main components of my non-standard interpretation of Frege’s views on existence to the English-speaking public (Rami 2017a, 2018, 2019a,b). First, I will outline the standard interpretation and show how to a great but not full extent the standard interpretation can be justified on the basis of Frege’s writings. Second, I show that the main error of the standard interpretation consists in the assimilation of the contents of the ordinary language expressions “exist” (“existiert”) and “there is” (“es gibt”) according to Frege. Third, I evaluate possible sources for this unfounded assimilation. After that, I outline my alternative interpretation that distinguishes in opposition to other non-standard interpretations between a substantive and a deflationary part of Frege’s complete conception of existence in analogy to Frege’s analysis of truth and negation. Fifthly, I justify my interpretation by the reconstruction of a so far overlooked master argument of Frege against the above-mentioned assimilation. In the last section, I introduce and discuss five objections against my interpretation that came to my attention.
Introduction to the Special Issue
Authors: Guetti Edward
Published: May 2023

~
Stanley Cavell on What We Say
Authors: Hamawaki Arata
Published: May 2023

In his early essay, “Must We Mean What We Say”, Cavell argues that the claims of ordinary language philosophers regarding “what we say when” are not empirical generalizations about a given group of speakers but are rather to be understood as measuring the limits of what counts as a coherent act of thinking and speaking. Cavell’s charge against the skeptic about the external world is that he seeks to think and speak beyond these limits. In this paper I compare Cavell’s response to the skeptic to Davidson’s. Both base their responses on a broadly Kantian approach that appeals to the conditions under which thinking or speaking about objects is possible. On this approach the skeptic isn’t giving a false answer to an intelligible question, but rather, the question to which the skeptic is giving an answer is shown to be in some way unintelligible. But while Davidson’s critique of the skeptic is based on the conditions of ascribing meaning to one’s words, and contents to one’s beliefs, Cavell’s critique is based on the failure of the skeptic to mean the words he uses in the way that he needs. This difference expresses an underlying disagreement about the meaning of “meaning”: for Davidson the world comes into view through the meaning of our words and concepts, through the contents of our beliefs; for Cavell, the world comes into view through the agreement in “criteria” that are a condition of applying words and concepts to the world. This difference illuminates what Cavell calls “the truth of skepticism”: the idea that “my relation to the world and to others in general is not one of knowing”.
Cavell’s Method
Authors: Laugier Sandra
Published: May 2023

It may be time to question analytic philosophy’s structural ignorance of the methods of ordinary language philosophy. Cavell’s Must We Mean What We Say? upsets the analytic tradition to this end, pursuing a “linguistic phenomenology” that focuses on ordinary language use as a resource for describing the world. Cavell thereby entrusts the tradition with a more ambitious and concrete philosophical task.
Schelling, Cavell, and the Truth of Skepticism
Authors: Bruno G. Anthony
Published: May 2023

This paper argues that (1) McDowell wrongly assumes that “terror”, Cavell’s reaction to the radical contingency of our shared modes of knowing or our “attunement”, expresses a skepticism that is antinomically bound to an equally unacceptable dogmatism because (2) Cavell rather regards terror as a mood that reveals the “truth of skepticism”, namely, that there is no conclusive evidence for necessary attunement on pain of a category error, and that (3) a precedent for McDowell’s misunderstanding is Hegel’s argument for necessary attunement in a system of knowing, whose refutation Schelling holds it is the “merit of skepticism” to provide.
ENVIRONMENTALLY FRIENDLY MATERIALS AND TECHNOLOGIES FOR THE PRODUCTION OF CASTINGS FROM ALUMINUM ALLOYS
Authors:   Odessa Polytechnic National University, Lysenko T. , Prokopovich I. ,   Odessa Polytechnic National University, Zamiatin M. ,   Odessa Polytechnic National University, Dotsenko V. ,   Odessa Polytechnic National University, Tur M. ,   Odessa Polytechnic National University
Published: May 2023

The article is devoted to the topical problem of development and creation of environmentally friendly materials and technologies for foundry production. In recent years, priorities have changed in the development of materials and technological processes towards their compatibility with the environment. The environmental aspects of production come to the fore, which are determined by harmful emissions into the atmosphere, which is strictly regulated by the Kyoto Protocol. In the foundry industry to obtain castings in disposable forms, various technologies have been developed and used, which can be separated based on the type of mold used and the method of its manufacture. The main content of the study is the analysis of traditional foundry technologies and the most promising technology of casting in low-temperature forms (NTF). The peculiarity of casting in NTF is a significant increase in the strength of molds, compared with casting in sand-clay molds, as well as the possibility of using water as the main binder. This method of mold making improves the structure, increases the accuracy and geometry of castings, saves molding materials, and, most importantly, improves the environment by eliminating harmful emissions into the atmosphere of foundries. However, the method of casting in NTF has a number of disadvantages associated with the formation on the surface of castings of shells, pores, as well as increased burns. To eliminate these shortcomings, it is proposed to apply non-stick coatings on the surface of NTF and rods. Considerable attention is paid to the development and research of non-stick coatings, which allow the use of environmentally friendly casting technology in NTF for the production of castings from various alloys of high quality. Coating compositions and methods for determining the optimal composition of non-stick coating, which could be recommended for the production of aluminum castings in low-temperature molds, are identified and described. The obtained results indicate a high potential for the use of this technology as a means of improving the environmental safety of foundry production.
THE EFFECT OF VARIABLE CROSS-SECTION OF PRESTRESSED BEAMS ON THE LOAD-BEARING CAPACITY OF THE STRUCTURE
Authors:   Odessa Polytechnic National University, Prokopovych I. , Tkachev A. ,   Odessa Polytechnic National University, Tkachev O. ,   Odessa Polytechnic National University, Prokopovych P. ,   Odessa Polytechnic National University
Published: May 2023

This paper examines issues related to increasing the load-bearing capacity of span beams of bridge-type cranes by the method of prestressing. A new mathematical model of a bridge crane with prestressed beams has been developed, which is based on the general theory of the stability of elastic systems and allows taking into account the real conditions of the construction of span structures. In this work, the equations of the deflection curve of this beam were obtained, which allow us to consider and analyze the influence of eccentric longitudinal forces on the stressed-deformed state of the span beam, taking into account the variable moment of inertia of its cross-section along the length of the span with a dangerous load combination. The work provides a more detailed calculation coefficient for the critical longitudinal force, which depends on the ratios of the moments of inertia of the cross sections of the span main beam, as well as the length of the support sections of the beam to the length of the beam itself. Based on the results of the obtained equations, a study of the static stiffness of the main beam was conducted depending on the ratio of longitudinal and transverse forces acting on the beam. The analysis of the obtained results revealed the recommended ratio of the lengths of the supporting and middle parts of the bridge, taking into account their geometric cross-section characteristics. The results obtained in this work can be used in the future for the modernization of cranes in order to increase their load capacity, extend their service life without dismantling, as well as for the improvement of existing structures and engineering calculation methods both at the stages of their design and in the conditions of real operation.
ROLE OF PASSIVE SAFETY SYSTEMS IN PREVENTION AND MITIGATION OF SEVERE ACCIDENTS AT NUCLEAR POWER PLANTS
Authors:   Odessa Polytechnic National University, Vyshemirskyi M. , Kravchenko V. ,   Odessa Polytechnic National University
Published: May 2023

Fukushima Daiichi accidents led to the worldwide update of the NPP safety requirements. Particular attention was paid to severe accidents both during the design of new NPP units and during the safety reassessment of existing ones. Performed safety reassessment of operating units was focused on development and implementation of technical means and strategies directed to prevention and/or mitigation of severe accidents. Technical solutions that are used in modern designs of reactor facilities involve several options for providing of heat removal from the core and containment. Such options include heat removal systems from the reactor core and from the containment of reactor facility. Most of such systems are based on passive principals of operation and do not require or require a minimum action of operating personnel. At the same time, reactor facilities that are operated in Ukraine are based on old VVER designs, which do not include passive safety systems for long-term heat removal (especially for the case of total station blackout, which was in the focus during safety reassessments, so-called “stress tests”). Thus, the necessity of such systems at Ukrainian NPPs with VVER-1000 and VVER-440 was discussed together with analysis of existing types of passive systems and their prevalence. Based on the results of performed analysis the feasibility of implementation at Ukrainian NPPs of a passive heat removal system from the core for VVER-1000 and from the confinement for the VVER-440 was identified. The possibility of implementation of such systems at Ukrainian NPPs requires a separate analysis. In addition, a general information on current state of passive systems reliability assessment was described. It should be noted that despite the reliability of passive safety systems is one of the important issues it is still poorly studied and require additional analyses.
PECULIARITIES OF MATHEMATICAL MODELING OF AN INDUCTION MOTOR TAKING INTO ACCOUNT ITS NONLINEARITIES
Authors:   Odessa Polytechnic National University, Boiko A. , Besarab O. ,   Odessa Polytechnic National University, Plis V. ,   Odessa Polytechnic National University
Published: May 2023

The choice of the mathematical description of the induction motor has been made. Modeling of an induction motor in threephase natural axes A, B, C is proposed, taking into account the nonlinearity of the parameters of an induction motor. The purpose of the study is aimed at improving the correspondence of the model of an induction motor to a real motor by taking into account the nonlinearities of its parameters. The mathematical model, obtained taking into account assumptions and idealization, is a system of differential, algebraic and logical equations that reflect the conditions of electrical and mechanical equilibrium and the conditions of electromechanical energy conversion. The electrical equilibrium equations are compiled according to Kirchhoff’s laws and Maxwell’s equations, and the mechanical ones – according to the d’Alembert and Lagrange equations. As state variables, the stator and rotor flux links are used, which are determined at each step of numerical integration. For the adequacy of the model in the calculations, it is necessary to take into account a number of nonlinearities of the IM – the effect of current displacement and machine saturation, losses in steel, changes in operating temperature. The choice of the parameter nonlinearity to be taken into account, as well as the accounting methods, are individual and are determined by the complexity of the tasks that are set for the model. The completeness of taking into account the non-linear parameters of the IM is determined by the requirements for the accuracy of the study and necessarily provides for taking into account the most influencing the performance of the machine
INCREASING THE EFFICIENCY OF USING CENTRALIZED HEAT SUPPLY SYSTEMS IN THE RECONSTRUCTION OF HEAT NETWORKS
Authors:   Odessa Polytechnic National University, Klymchuk O. , Vudvud O. ,   Odessa Polytechnic National University, Babaiev Ye. ,   Odessa Polytechnic National University, Serheiev M. ,   Odessa Polytechnic National University, Aksyonova I. ,   Odessa State Academy of Civil Engineering and Architecture
Published: May 2023

The paper analyzes the existing state of heat supply systems of residential areas. The need to take into account modern requirements for thermal modernization of buildings of various types of purpose, as well as operating modes of internal heat supply systems with different types of heat load (heating, hot water supply, ventilation) is shown. The main types of buildings that can be located in residential areas are shown (high-rise residential buildings, dormitories, cottages, administrative buildings and offices, educational institutions, shopping centers, catering enterprises, etc.) and the peculiarities of their heat supply systems are characterized. Based on the presented methodology, the calculation of the daily and weekly schedule of heat consumption for two generalized types of buildings: residential (high-rise buildings, cottages, dormitories, etc.) and public (administrative buildings, educational institutions, offices, etc.) was carried out. Based on the calculations, a generalized heat load schedule for two types of buildings was drawn up, taking into account the mutual influence on the maximum power of the heat source. Based on the obtained results, calculations were made and daily schedules of generalized heat consumption by buildings of various types were made, taking into account modern energy efficiency requirements (two-period mode of heating and thermal modernization). The expediency of using heat accumulators in thermal points for smoothing the peaks of the total load and reducing the maximum power of the heat source is shown. A probable decrease in the maximum power of heat supply systems is shown, and recommendations are given regarding the calculations of heat supply systems during their reconstruction and modernization.
CRITERIA FOR CONDITIONS OF HYDRODYNAMIC INSTABILITY OF THE СOOLANT IN ACCIDENTS WITH REACTOR CIRCUIT LEAKS
Authors:   National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kondratyk V. , Skalozubov V. ,   Odessa Polytechnic National University, Komarov Ju. ,   Odessa Polytechnic National University, Dorozh O. ,   Odessa Polytechnic National University, Filatov V. ,   National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
Published: May 2023

Modern deterministic codes for modeling the safety-dominant nuclear power plant accident groups with reactor circuit leaks (including inter-circuit leaks in steam generators) do not determine the conditions and consequences of the processes of hydrodynamic instability of the coolant. Work on preventing conditions of hydrodynamic instability was carried out for individual safety systems of the reactor installation in which specific equipment is installed. The occurrence of hydrodynamic instability of the coolant changes the conditions of heat exchange in the active zone of the reactor, leads to cyclic high-amplitude hydrodynamic loads on the internal body structures and other negative effects. The purpose of the presented work is to create methods for modeling conditions of hydrodynamic instability of the coolant during accidents with reactor circuit leaks. The method of implementation of the work is based on the development of a thermodynamic method for determining the conditions of hydrodynamic instability in the conditions of accidents with reactor circuit leaks. On the basis of the approximate method, the minimum dimensions of the reactor circuit leaks from the HPP in the area of hydrodynamic instability of the coolant were determined: for the emergency cooling system of the reactor active zone with high-pressure pumps - 400 mm; for the system of emergency cooling of the active zone of the reactor with low-pressure pumps - 100 mm. The occurrence of hydrodynamic instability of the coolant changes the conditions of heat exchange in the active zone of the reactor, leads to cyclic highamplitude hydrodynamic loads on the internal body structures and other negative effects. The original method of determining the criteria for the occurrence of hydrodynamic instability of the coolant at the stage of starting the pumps of safety systems in the event of an accident with reactor circuit leaks is presented.
ISSUES OF PREDICTINGTHE IMPACT OF NUCLEAR POWER FACILITIES ACCIDENTS’ RADIATION CONSEQUENCES
Authors:   Odessa Polytechnic National University, Skalozubov V. , Kozlov I. ,   Odessa Polytechnic National University, Hayo Hani ,   Odessa Polytechnic National University, Kozlov О. ,   Odessa Polytechnic National University, Dudarev I. ,   Odessa State Agrarian University, Yarotskaya G. ,   Odessa I.І. Mechnikov National University
Published: May 2023

The analysis for history’s biggest nuclear accidents consequences, at Chernobyl Nuclear Power Plant (NPP) and Fukushima-Daihichi NPP, identified various radiation dose loads on liquidators, civilians and environment. Predicting the radiation subsequent effects on biological and ecological objects depends both on the radiation loads range and various other factors not related directly to the accidents’ radiation consequences. The analysis of stochastic approaches to predicting the radiation impact revealed their limited applicability cause of sufficiently adequate and substantiated statistical databases about the accidents-produced radiation doses negative effects. The analysis of deterministic methods to predicting that impact determined their limitation due to significant quantitative and qualitative discrepancies between methods caused by the difference in neutron-physical “dose − effect” models and those methods experimental verification conditions difference. To predict the NPP accidents radiation impact, important is to develop an alternative risk-oriented approach based on the integrated use of stochastic and deterministic methods, taking into account their applicability limitations. The unacceptable negative event “upper” limit probability area depending on the radiation doses from the accidents, is determined by stochastic methods, and the “lower” limit probability area is determined by deterministic ones. Such event probability maximum value is determined by the maximum allowed dose at radiation sickness onset. The obtained results can serve in a basis for objective assessments of civilians informing about the consequences of radiation accidents at NPPs.
SAFETY OF UKRAINE’S NUCLEAR POWER INDUSTRY IN EXTREME OPERATING CONDITIONS
Authors:   Odessa Polytechnic National University, Skalozubov V. , Kozlov I. ,   Odessa Polytechnic National University, Kozlov О. ,   Odessa Polytechnic National University, Bundev D. ,   Odessa Polytechnic National University, Kosenko S. ,   Odessa Polytechnic National University
Published: May 2023

An urgent issue of the state (level) of safety of Ukraine’s nuclear power industry in extreme conditions is the situation of the Zaporizhzhia NPP, the largest in Europe, due to the station’s location in the war zone and difficulties in its management and operation, as well as the safety regulation of the station in the occupied territory. In the proposed article, the possibility of Zaporizhia NPP industrial site flooding is analyzed from the elaborated hydrodynamic model and justifying calculation; the conditions of ZNPP industrial site possible flooding are determined depending on the warhead power producing a corresponding destructive effect. Probabilistic approaches to assessing the Zaporizhia NPP safety objective state (level) in extreme conditions are insufficiently justified taking into account the lessons of the largest nuclear and radiation accidents. On the basis of a deterministic approach, the conditions of Zaporizhia NPP industrial site critical flooding due to extreme military action are identified. Flooding of the plant’s industrial site may cause two initial emergency events: a complete long-term de-energization of power units and violation of heat exchange conditions in spent nuclear fuel dry storage facilities. Prevention of flooding of the Zaporizhia NPP industrial site can be based on the construction of protective flood barriers on the cooling pond coast. Prospective directions to increase the accident management efficiency related to the nuclear power units’ passive safety systems modernization and improvement of operational symptom-oriented emergency instructions/manuals for managing severe (nuclear) accidents have been identified. An effective accident management strategy with complete long-term de-energization of WWER power units can be based on a comprehensive modernization of emergency recharge systems of steam generators with steam driven pumps and natural circulation circuits of passive heat removal systems from the pressurized reactor unit.
MODELING MASS-SPRING-DAMPER SYSTEM USING SCILAB
Authors:   Odessa Polytechnic National University, Bovnegra L. , Strelbitskyi V. ,   Odessa National Maritime University
Published: May 2023

Modeling a system means developing a mathematical representation to simulate certain properties observed in real systems. These systems can range from a car suspension to the most complex robotics. In modern mechanical engineering, it is routine to model a physical dynamic system as a set of differential equations that will later be simulated using a computer. This systems can range from a car suspension to the most complex robotics. Use software for numerical analysis and qualitative analysis of dynamic systems in engineering and applied science education simplifies the analysis and analysis. In this paper, the dynamic behavior of massspring-damper system has been studied by mathematical equations in free software Scilab. Scilab is free and open source software for numerical computation providing a powerful computing environment for engineering and scientific applications. The resulting equations represent a generalization of the classical mass-spring-damper model; the proposed representation can be used to describe a wide variety of systems, which had not been addressed due to the limitations of the classical calculus. Software implementation of the model and calculations are performed in the Scilab environment. The massive use of software generated a great business. Although the reliability and effectiveness of commercial software is undeniable, their cost is not available to most researchers, students, and public universities. This paper clearly shows that Scilab is capable of handling such uncertainties with little effort. It should be noted that this paper is written with the intention of disseminate the ideas of how to use Scilab for teaching theory modelling, dynamic of machine or performing related research works.
THE RESEARCH OF LEVELS OF DESCRIPTION OF MODERN CRITICAL APPLICATION SYSTEMS
Authors:   Odessa Polytechnic National University, Babych Yu. , Babych M. ,   Odessa Polytechnic National University, Pavlyshko A. ,   Odessa Polytechnic National University, Mamedova A. ,   Odessa Polytechnic National University
Published: May 2023

At the current stage of economic and technical development, one of the most important problems is maintaining the reliability and fault tolerance of critical application systems used in the management of nuclear power plants, air, rail and road transport, technological units in metallurgy, the oil and gas industry, etc. The general trend of the development of critical application systems is characterized by the following factors: an increase in the degree of complexity of control objects, an expansion of the composition and level of complexity of solved functional tasks, a reduction in decision-making time, an increase in the cost of errors and the probability of large-scale emergency situations. The main reasons for the escalation of dangerous situations are failures in critical application systems. The publication examines the concept of a critical application system, examines the question of levels of description of critical application systems, examines the issue of interdependent subsystems based on the concept of potential and information technologies supporting the reliability and fault tolerance of critical application systems. For such systems (power supply and energy supply systems, water supply and drainage, etc.), an urgent problem is to ensure the objectivity, reliability and adequacy of forecasting and prevention of dangerous and possible cascading effects that can lead to man-made accidents and catastrophes. This can significantly affect the functioning, stability and survivability of systems of critical application, the ecological and technogenic safety of the surrounding territories, and the safety of life of the population of Ukraine. In the event of damage to the system of critical application, which can be sudden and intense, it will lead to an emergency situation of a man-made nature.
Consumers Perspectives on Digital Marketing Features
Authors:   Harokopio University (ΗUA), Maria Kanavaki , George Malindretos ,   Harokopio University (ΗUA)
Published: May 2023

The aim of this study is to investigate the consumers’ perspective on the importance of various digital marketing features, particularly in the pandemic period which boosted e-commerce and digital services. In this sense, this paper addresses at first the digital and social media tools utilization in the framework of the new digital world of communications. Consumer Behavior in the Covid-19 era follows, presenting the impact of covid-19 in consumer’s way of living and thinking in respect to their on-line shopping daily habits. In this sense, in view of the company’s website importance in their consumers’ searching and purchasing process, literature review is completed with the description of the various design principles with special references to the virtual and augmented Reality tools, for which interest in the past few years has risen considerably. In order to verify the theoretical insights, an empirical research was conducted through a structured questionnaire answered by 328 consumers in Greece. Main results reveal that key features of a site are products' photos and ease of accessibility in information and transactions, while a low proportion of the sample is positive in the potential adoption of VR tools. In addition, delays on deliveries have a negative impact on e-commerce and digital marketing in overall and this becomes even worse as frequency of on-line purchases by the customers increase. The conclusions and recommendations drawn in the present study are expected to provide some useful insights for the successful digital marketing redesign towards increasing company’s products/services attractiveness.
Adult t-cell leukemia/lymphoma: case report in southern Brazil
Authors: Paula Pavei Isadora
Published: May 2023

Adult T-cell leukemia/lymphoma (ATLL) is an aggressive type of non-Hodgkin's lymphoma that can be primary of the skin or secondary, caused by Human T-cell lymphotropic virus (HTLV-1) infection. The prevalence of HTLV-1 infection is high in Brazil, however reports of ATLL are rare, possibly underdiagnosed and underreported. This paper presents a case report of a patient coming from the south of Brazil, a region of the country with few cited cases of this comorbidity. It shows the importance of disclosing data on infection by the virus, so that public policies for prevention can be carried out, as well as the presentation of cases that develop ATLL.