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The occupational exposure to softwood and hardwood wood dust was determined during forestry work in timber stands. In the determination of inhalable wood dust, three tree species (Fagus sylvatica, Quercus sp. and Pinus brutia) and three chainsaw operating parameters were taken into account (in total six assessment indicators). The first operating parameter was the chainsaw operating under normal conditions (regular chain sharpening). The second and third operating parameters were improper chainsaw maintenance (irregular chain sharpening) and low throttling pressing (operating the chainsaw at low engine speeds), respectively. The determination of inhalable wood dust concentrations from the ambient air was performed using the Inhalable Organic Matter (IOM) sampler, manufactured by SKC Button Sampler (Dorset, United Kingdom). Out of a total of 108 concentration cases of inhalable wood dust, 44 (40.74%) showed concentrations greater than 3.00 mg·m−3, while in 10 (9.26%) cases, the dust concentration exceeded 5 mg·m−3. The eight-hour time-weighted average exposure to wood dust ranged from 0.99 mg·m−3 to 12.52 mg·m−3, with an average of 4.22 mg·m−3. The results indicated that the increase in wood dust concentration was dependent on improper chainsaw maintenance, while low throttling pressing reduces dust concentration levels. Additionally, an increase in wood dust concentration was observed in species with thick bark (Pinus brutia and Quercus petraea). [ABSTRACT FROM AUTHOR]

Research has shown that there is a need to examine prospective teachers' development trajectories related to noticing expertise. An important content in the Spanish high school curriculum (16–18 years old) is the limit concept. Given the importance of this concept in the curriculum and the difficulties some prospective teachers have, developing their noticing of students' mathematical thinking of this concept in teacher education programs is crucial to achieve high school student mathematics achievement. This study examines how prospective secondary school mathematics teachers (PTs) notice students' mathematical thinking about the limit concept as they participated in a teaching module. PTs had to anticipate and interpret students' mathematical understanding and make instructional decisions to support students' conceptual progression using information about high school students' understanding of the limit concept. We examined PTs changes related to how they anticipated, interpreted and made instructional decisions during the teaching module. We identified a change in how PTs conceived the understanding of the dynamic limit concept: from all-or-nothing dichotomy to progression; and a change in the instructional decisions they made: from decisions focused on changing the type of discontinuity to conceptual decisions. These changes allow us to characterise development noticing pathways. Our findings also help to identify the teaching module characteristics that support the development of PTs noticing. [ABSTRACT FROM AUTHOR]

We investigate a phase-field version of the Faber-Krahn theorem based on a phase-field optimization problem introduced by Garcke et al. in their 2023 paper formulated for the principal eigenvalue of the Dirichlet-Laplacian. The shape that is to be optimized is represented by a phase-field function mapping into the interval [0,1]. We show that any minimizer of our problem is a radially symmetric-decreasing phase-field attaining values close to 0 and 1 except for a thin transition layer whose thickness is of order ε>0. Our proof relies on radially symmetric-decreasing rearrangements and corresponding functional inequalities. Moreover, we provide a Γ-convergence result which allows us to recover a variant of the Faber-Krahn theorem for sets of finite perimeter in the sharp interface limit. [ABSTRACT FROM AUTHOR]

The present article describes the precise structure of the L p -spaces of projective limit measures by introducing a category-theoretical perspective. This analysis is applied to measures on vector spaces and in particular to Gaussian measures on nuclear topological vector spaces. A simple application to constructive quantum field theory (QFT) is given through the Osterwalder–Schrader axioms. [ABSTRACT FROM AUTHOR]

Given a Euclidean triangle, a sequence of nested triangles is obtained by repeating a specific geometric construction. Two well-known sequences of Euclidean triangles are generalized into hyperbolic and spherical geometries. [ABSTRACT FROM AUTHOR]

In this article, I will focus on a reading of Moby Dick based on the identification between the two key figures of the work: Ahab, the captain who tries to transgress the limits of the human, according to the terminology of the philosophy of Trias, and a narrator, Ishmael, who seems to know every thought of the Pequod's crew and whose entry into the narrative already raises a doubt as to his identity. To do this, I will use Eugenio Trias' philosophy of the limit as methodology. [ABSTRACT FROM AUTHOR]

This text was written to disseminate a proposal of the Study Group on Calculus in Secondary and Higher Education, headed by researchers Dr. Pierre Job (ICHEBrussels Management School-Belgium) and Dr. Luiz Márcio Santos Farias (UFBA-Brazil), whose objective is to create a joint work Brazil-Belgium in search of a reference epistemological model for calculus and analysis teaching. In 2023, at the Integrated Studies Seminar-Calculus in Secondary and Higher Education at PUC/SP, Professor Job presented aspects of the research carried out in Belgium based on a reference epistemological model, the theory of didactical situations and the anthropological theory of the didactic regarding the limit concept. To motivate calculus teachers to engage in this research, it summarizes the events of two of the three-day seminars. The first part reports the questions proposed on the first day, followed by a reflection on some. Those questions served as a model for the initial survey of difficulties that could provide answers to three open questions: Are the premises used in Belgium valid in the Brazilian context? Is it possible to build a shared theoretical framework that allows us to question the status of epistemological obstacles and the main difficulty encountered in teaching the concepts of limits, derivatives, and integrals? What kind of experiment can we plan to test this model? The second part summarizes Prof. Job's presentation on the second day about the research carried out in Belgium. [ABSTRACT FROM AUTHOR]

Copyright of Tropelías: Revista de Teoría de la Literatura y Literatura Comparada is the property of Prensas Universitarias de Zaragoza and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Mülkiye Dergisi is the property of Mulkiye Dergisi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Cyber-physical Systems (CPS) are widely used in all areas of life. Ensuring the correctness of CPS remains an enduring challenge during its development and design phases. One approach to ascertain the correctness of CPS is behavior equivalence based on bisimulation. However, whether the implementation development process develops in the right direction has an important impact on obtaining the correct system implementation. Especially, the development process of complex CPS often yields a multitude of implementation versions, the correlation among these versions partly signifies the correctness of the development process. This paper formalizes the relationship between the implementation versions and establishes a formal description of the development process progressing in the correct direction, leveraging the concept of a "limit idea." Initially, we introduce the concept of "limit bisimulation" for CPS systems to delineate implementations acquired during the CPS development process. Specific limit bisimulations are demonstrated to represent distinct scenarios within the development process. Subsequently, the convergence mechanism of implementations is modeled through bisimulation limits, encapsulating the CPS's specification as the ultimate goal of obtained implementations during the development process. Finally, the congruence property of the bisimulation limit is proved, which accounts for the relation between specification and implementation versions can be decomposed into a refinement hierarchy. The limit theorem of bisimulation in CPS can help the designer and developer of CPS to comprehend the development course better. [ABSTRACT FROM AUTHOR]

This paper explores a specific problem within an important philosophical genre of the fourteenth century: the debates over the perfection of species. It investigates how the problem of defining limits for continuous magnitudes – a problem typical of Aristotelian physics – was integrated into these debates at the levels of genera, species, and individuals as these entities began to be conceptualized in quantitative terms. After explaining the emergence of this problem within fourteenth-century metaphysics, the paper examines the contributions of three philosophers – Hugolinus of Orvieto, John of Ripa, and Paul of Venice – who offered varying solutions to the challenge of defining limits between species. It demonstrates that two primary solutions arose, inspired by continuous and discrete mathematical objects. It is shown that whereas Hugolinus of Orvieto advocates for a continuist model, John of Ripa proposes a discrete one. The last part of the paper examines Paul of Venice's hybrid approach, which combines elements from both models, facilitating a more comprehensive treatment of species particularly difficult to analyse, namely geometric figures. The conclusions of this comparative study underscore how profoundly the metaphysical reflections of the Middle Ages contributed to the analysis of the structure of the continuum and the extension of the notion of quantity to various objects. [ABSTRACT FROM AUTHOR]

Copyright of Contrastes: Revista Internacional de Filosofia is the property of Contrastes: Revista Internacional de Filosofia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In previous papers that have dealt with cylindrical map projections as limiting cases of conical projections, standard or equidistant parallels were used in the derivations. This paper shows that this is not necessary and that it is sufficient to use parallels that preserve length. In addition, unlike other approaches, in this article the limiting cases of conic projections are derived in the most natural way, by deriving the equations of cylindrical projections from the equations of conic projections in a rectangular system in the projection plane using a mathematical concept of limits. It is shown that such an approach is possible, but not always, so it should be used carefully, or even better, avoided in teaching and studying map projections. [ABSTRACT FROM AUTHOR]

Considerable debate has focused on whether pre-commitment to a money and/or time limit and adherence to that limit should be mandatory or voluntary. A unique feature of Ontario Lottery and Gaming's player management system (My PlaySmart) provides a middle ground by allowing players to select whether they are permitted to continue playing once their limit is reached (the soft lock option) or whether continued play is not permitted (the hard lock option). We assessed the relative responsible gambling utility of these two options using player account data by comparing play data before and after enrollment. Players who chose the hard lock option decreased their average coin-in, loss per visit, and minutes played per visit. In contrast, soft lock enrollees significantly reduced their coin in (but not to the same extent as those who chose the hard lock option) and increased their visits from pre-enrollment to post-enrollment. The play data for hard and soft lock enrollees was also benchmarked against play of non-enrollees. Results suggest that the soft lock option is relatively ineffective at limiting play, thus adding important knowledge to the ongoing debate about pre-commitment schemes that aim to advance responsible gambling to minimize gambling-related harms. [ABSTRACT FROM AUTHOR]

Copyright of Larq Journal for Philosophy, Linguistics & Social Sciences is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

We prove that an action ρ:A→M(C0(G)⊗A) of a locally compact quantum group on a C∗-algebra has a universal equivariant compactification, and prove a number of other category-theoretic results on G-equivariant compactifications: that the categories compactifications of ρ and A respectively are locally presentable (hence complete and cocomplete), that the forgetful functor between them is a colimit-creating left adjoint, and that epimorphisms therein are surjective and injections are regular monomorphisms. When G is regular coamenable we also show that the forgetful functor from unital G-C∗-algebras to unital C∗-algebras creates finite limits and is comonadic, and that the monomorphisms in the former category are injective. [ABSTRACT FROM AUTHOR]

The article delves into the multifaceted interplay between Hegel and postmodernity, as well as between postmodernity and the contemporary era. Both perspectives grapple with the notion of modernity, intricately tied to considerations of history, the idea of ending, and the concept of historical breaks. Deriving an analysis of the leading ideas of modernity and postmodernity, focusing especially on their relation to Hegel’s philosophy, we propose the thesis that postmodernity is not an epoch that succeeded modernity, but rather a transitional phase contributing to the decline of modernity itself. The contours of this new epoch, as yet indefinable or explicable, are revealed through significant shifts that have recently unsettled the fundamental frameworks upon which modernity was constructed. In doing so, we show that Hegel, who is certainly not a postmodernist, points to precisely the mechanism through which modernity can be transcended, which concerns human relation to substance, being, and time. Moreover, as it entails a revised human engagement with finitude and infinity, we term this relation “In-Finitude”, or “Un-Endlichkeit”.

We of the modern world tell stories about being modern, becoming modern. We ask where modernity is going. Two metaphorical complexes dominate these stories: We favour metaphors of life and growth; modernity has a life of its own. Or we prefer metaphors of motion and direction; modernity is a journey that takes many paths. The two complexes coexist uneasily even as they feed on each other; together they mark the modern conceit that modernity has left tradition behind. Those whom modern society has victimized, uprooted or abandoned may resist both complexes, often seeking to retrieve the metaphors of a lost, broken, misremembered or invented past. Most beneficiaries of modernity favour the metaphorical complex of life and growth--or merely take it for granted. Scholars with a critical attitude toward modernity often favour many paths and thus the metaphorical complex of motion and direction--without realizing it. Seven metaphors reveal these tendencies: boundary, break, juncture, limit, rupture, stage, transition. They also hint at a third, distinctively modern metaphorical complex. In our stories about modernity, we deploy plural versions of spatial metaphors sequenced in time: frames, boxes, compartments, or containers, and mark the sequence with metaphorical signposts: age, stage, wave, or period. [ABSTRACT FROM AUTHOR]

Copyright of Enthymema is the property of Enthymema, International Journal of Literary Criticism, Literary Theory & Philosophy of Literature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Abstract We of the modern world tell stories about being modern, becoming modern. We ask where modernity is going. Two metaphorical complexes dominate these stories: We favour metaphors of life and growth; modernity has a life of its own. Or we prefer metaphors of motion and direction; modernity is a journey that takes many paths. The two complexes coexist uneasily even as they feed on each other; together they mark the modern conceit that modernity has left tradition behind. Those whom modern society has victimized, uprooted or abandoned may resist both complexes, often seeking to retrieve the metaphors of a lost, broken, misremembered or invented past. Most beneficiaries of modernity favour the metaphorical complex of life and growth—or merely take it for granted. Scholars with a critical attitude toward modernity often favour many paths and thus the metaphorical complex of motion and direction—without realizing it. Seven metaphors reveal these tendencies: boundary, break, juncture, limit, rupture, stage, transition. They also hint at a third, distinctively modern metaphorical complex. In our stories about modernity, we deploy plural versions of spatial metaphors sequenced in time: frames, boxes, compartments, or containers, and mark the sequence with metaphorical signposts: age, stage, wave, or period.

BackgroundAt present, only the rare earth industry has established discharge limits for waste water generated from associated radioactive mines. Liquid effluent from associated radioactive mines industries other than rare earths should satisfy with the requirements of Integrated Wastewater Discharge Standard (IWDS). However, discharge limits of IWDS are disputable to be implemented, hence not suitable for the development and utilization of associated radioactive mines.PurposeThis study aims to consider the need of establishing designated standards of discharge limits on liquid effluent from related radioactive mines wastewater.MethodsFirstly, investigation was conducted on the types and concentration of radionuclides of wastewater from associated radioactive mine, as well as the level of radioactive wastewater treatment technology. Results on the discharge limits for natural radioactive isotopes both in China and abroad were examined and compared. Then, the types of radionuclides and discharge limits to be controlled in the development and utilization of liquid effluent from associated radioactive mines were studied in a scientific manner. Finally, the method of establishing discharge limits for liquid effluents from associated radioactive mines by referring to the uranium mining and metallurgical industries was proposed.Results & ConclusionsThe specific standard on discharge limits for wastewater treatment from associated radioactive mines has a significant impact on regulating the discharge of effluent in China and reducing the radiation environmental impact of associated radioactive mines. It is reasonable to refer to the standard limits of uranium mining and metallurgy. Liquid effluent from associated radioactive mines industries other than rare earths should satisfy with the requirements of IWDS.

The skin, the marvelous and highly complex covering of our organism, is omnipresent in the work of Laura Pugno. In this essay, treasuring above all the hypotheses formulated in one classic of psychoanalysis such as The Skin-Ego by Didier Anzieu and a volume by the anthropologist David Le Breton, we follow the minimal, humble deeds of the very young protagonist of When you will come, the second novel by the Roman writer, as well as a splendid allegorical-fantastic representation of the urgent need to mark defined limits in our liquid time (the adjective belongs, as is more than known, to Zygmunt Bauman). In an era of collapse of the symbolic, the epidermis – the organ that precisely draws the outline of our bodies – would seem to be the last limit left to us, the one from which to start again.

In this paper, according to the concept of multivariate composite function, the limit and continuity conditions of multivariate composite function are given, and the continuity relationship between the inner function and the outer function of the composite function at the same point is investigated. The relationship between the limit and continuity of a composite function composed of two functions at the same point is investigated by examples, while some limit results are explained from the perspective of composite functions, and the limit calculation law of multivariate composite functions is proposed. Using the consistent central limit theorem in the limit calculation law, the absolute value and limit of the interval of the multivariate composite function are obtained, and the iterative limit of the variational reduction approximation method is confirmed by combining the absolute value and limit of the interval of the multivariate composite function. On the basis of the application of limit operation of a multivariate composite function, the limit distribution of high-dimensional likelihood ratio statistics of multivariate composite function is analyzed by using data simulation analysis. The results show that both limit distributions have better simulation results when p are small, such as p = 5 or p = 10, but the traditional limit is better than the normal limit, indicating that the results of multivariate composite function limit calculations have good accuracy. A method for solving the limits of multivariate composite functions is proposed in this study, which is of great theoretical and practical significance in the study of higher mathematics.

La superficie degli oggetti rappresenta il punto di contatto tra la dimensione sensoriale dell'utente e la sfera pratico-funzionale del prodotto. In questo spazio sottile, sempre più spesso, si svolge l’azione più efficace del progetto, ormai quasi strutturalmente emancipato dal formalismo dei volumi con cui lo spazio d’uso viene occupato. Nel design e nell’architettura involucro e rivestimento rappresentano oggi il punto di convergenza di un duplice campo d’interesse: il primo riguarda la sensibilizzazione della superficie orientata a favorire nuove modalità di interazione tattile (aptica), l’altro ne coinvolge l’aspetto comunicativo sul piano dell’interazione visiva.

This research paper will start by presenting background information to risk management in the manufacturing sector followed by review of the literature for state of the art knowledge in this subject area. An algorithm for generic risk management system will be presented highlighting the various stages from establishing the risk context, assessment, evaluation and managing it. Finally, a risk management framework will be developed showing the sequence for assessing potential risk factors associated with the typical manufacturing process This research paper will start by presenting background information to risk management in the manufacturing sector followed by review of the literature for state of the art knowledge in this subject area. An algorithm for generic risk management system will be presented highlighting the various stages from establishing the risk context, assessment, evaluation and managing it. Finally, a risk management framework will be developed showing the sequence for assessing potential risk factors associated with the typical manufacturing process This research paper will start by presenting background information to risk management in the manufacturing sector followed by review of the literature for state of the art knowledge in this subject area. An algorithm for generic risk management system will be presented highlighting the various stages from establishing the risk context, assessment, evaluation and managing it. Finally, a risk management framework will be developed showing the sequence for assessing potential risk factors associated with the typical manufacturing process This research paper will start by presenting background information to risk management in the manufacturing sector followed by review of the literature for state-of-the-art knowledge in this subject area. An algorithm for generic risk management system will be presented highlighting the various stages from establishing the risk context, assessment, evaluation and managing it. Finally, a risk management framework will be developed showing the sequence for assessing potential risk factors associated with the typical manufacturing process This research paper will start by presenting background information to risk management in the manufacturing sector followed by review of the literature for state of the art knowledge in this subject area. An algorithm for generic risk management system will be presented highlighting the various stages from establishing the risk context, assessment, evaluation and managing it. Finally, a risk management framework will be developed showing the sequence for assessing potential risk factors associated with the typical manufacturing process Project activities are carried out in conditions of uncertainty. Therefore, knowledge of the basics of project risk management necessary in the professional activities of economists, managers and entrepreneurs. At the stage of creating a business in the process of developing a business plan, an entrepreneur needs to evaluate economic efficiency and risks of this business project, develop a risk management plan, plan a response to possible risks. When the established enterprise is located at the stage of its further development, then in the process of implementation various projects - to expand business, organizational projects - risk management is also required. In addition, at the stage of decline, when the organization is in crisis, it is necessary to develop projects for the improvement of this enterprise, in the process implementation of which risk management is required. All this emphasizes the relevance of the issues considered in this study guide. [ABSTRACT FROM AUTHOR]

Copyright of Filozofski Vestnik is the property of Scientific Research Centre of Slovenian Academy of Sciences & Arts and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In previous papers that have dealt with cylindrical map projections as limiting cases of conical projections, standard or equidistant parallels were used in the derivations. This paper shows that this is not necessary and that it is sufficient to use parallels that preserve length. In addition, unlike other approaches, in this article the limiting cases of conic projections are derived in the most natural way, by deriving the equations of cylindrical projections from the equations of conic projections in a rectangular system in the projection plane using a mathematical concept of limits. It is shown that such an approach is possible, but not always, so it should be used carefully, or even better, avoided in teaching and studying map projections.

[Display omitted] It was found that the reactivity of a hydrocarbon during oxidation catalyzed by a noble metal begins to play a significant role with an increase in the number of carbon atoms in its molecule. Thus, the process of hydrocarbon mass transfer to (or on) the catalyst surface determines the oxidation rate. [ABSTRACT FROM AUTHOR]

Though I am not a linguist by trade, writing "of" (rather than "about") literary philosophy in Maltese with the intent of exploring the interrelationship between the experience of the contingent self, displacement, and the pain of beauty, becomes a linguistic affair. In this paper I explore how doing philosophy in Maltese brings one to engage with disciplines in which one was entirely educated in other languages (in this case, primarily in English and Italian), and how this opens new opportunities that move inwards as well as outwards. This aspect of directional thinking, as it were, also enters those immanent and external spheres by which phenomenology and aesthetics are put in play. This refers to how the "musk" of one's language (a term whose linguistic use I first encountered in Seamus Heaney's take on poetry's indigeneity), is bound to carry one's aesthetic imaginary onto a wide horizon whose boundaries could only be likened to the porousness of rubble walls. Such rubble walls – these ħitan tas-sejjieħ (in Maltese) – tend to mark territories while facilitating a high degree of fluency between them, to the extent that we could speak of the pattern of bocage as a contingency of meaning just as the pattern of bricolage implies an act of an intentional weaving. This paper reflects on the process of writing in Maltese as a means by which contingency as an approach to living and thinking, remains core to the understanding of how the self is immersed in what we broadly identify with the poetics (and therefore, the making) of the Mediterranean imaginary. [ABSTRACT FROM AUTHOR]