Realised since the 1980’s, the project of the “city rebuilding” presupposes an environmental turn in city reform programmes and policies. & e purpose of this article is to demonstrate, how the agenda of the Country’s City Politics is being inspired by, and assimilates, the ideas of “being together” that have been worked out by city (social) movements. The society has come to be perceived as a source of “innovation”, or as possessing a certain, so far neglected, potential of development. In the governmental agendas, the ideals and claims of the social movements are operationalised” in such a way, as to identify society as a new resource of economic growth. The assimilation of the claims and ideals of the city movements into the governmental agendas becomes part of a new political rationality.
The article is an attempt to analyze the spatio-pedagogical discourse of the German social pedagogy. It represents only a fragment of reflection on the turns in paradigm of place/ space (spatial turn), as pedagogical terms. & e authors seek to answer the question what is the space and place, and what concepts in the field of reflection on the place/space run in the German social pedagogy. The text introduces, inter alia, the relational concept of space developed by Martina Löw, duality of space and the concept of spacing. Active creation of urban space, the spatial dimension of the relationship and its dynamics are subjected to discussion. The article presents critical approach to the notion of transdisciplinary space, and space-oriented social work. Finally, it provides the incentive for in-depth, international analyzes of spatio-pedagogical theories.
The presence of an open-circuit fault subjects a three-phase induction motor to severely unbalanced voltages that may damage the stator windings consecutively causing total shutdown of systems. Unplanned downtime is very costly. Therefore, fault diagnosis is essential for making a predictive plan for maintenance and saving the required time and cost. This paper presents a model-based diagnosis technique for diagnosing an open-circuit fault in any phase of a three-phase induction motor. The proposed strategy requires only current signals from the faulty machine to compare them with the healthy currents from an induction motor model. Then the errors of comparison are used as an objective function for a genetic algorithm that estimates the parameters of a healthy model, which they employed to identify and localize the fault. The simulation results illustrate the behaviours of basic parameters (stator and rotor resistances, self-inductances, and mutual inductance) and the number of stator winding turn parameters with respect to the location of an open-circuit fault. The results confirm that the number of stator winding turns are the useful parameters and can be utilized as an identifier for an open-circuit fault. The originality of this work is in extracting fault diagnosis features from the variations of the number of stator winding turns.
This article presents the problem of understanding Heideggerian ‘turn’ (Kehre) in the context of the most important aspects of his later philosophy. Since Heidegger had written (secretly) Contributions to Philosophy, he departed from his original philosophical assumptions, which had been presented in Being and Time. Heidegger’s turn was conceived as a discovery of truth of Being, as a project of another beginning, as proper asking about Being as such, as well as a discovery of a hidden aspect of being that is revealed in an event (‘enowning’).
Business ethics – together with other branches of applied ethics – faces a challenge of the validity of its claims. These ethical claims must be convincing for participants of economic life and meet the requirement of impartiality. Of course, philosophical ethics helps in this search. Among many ethical propositions, the emphasis is on those that have sufficient epistemological grounding (often taking the form of a meta-ethical recommendations). Considering this condition, the choice of ethical tools is significantly reduced. For this reason, the search for ethical standards applicable in social practice is continued in the sphere of culture. Meanwhile, this widening of the research field must be done with caution. It is hard to find in culture an answer to the question about the criteria for ethical behavior. Culture, of course, is founded on such criteria. However, there are more of them than would be expected by an ethicist seeking – in this area – a solution to the problem of the validity of an ethical norm. The fact that complicates this search is that the changes that have been taking place in Western culture since the mid-twentieth century are very powerful. Their multi-faceted nature means that their systematization (carried out using the principle of non-contradiction) is not possible. The hypothesis regarding the complexity and heterogeneity of normative beliefs held by Western societies is confirmed (among others) by the analysis of processes initiated by the performative turn. Hence the choice of arguments offered by performance studies. They harmonize with the leading intention of this research paper. They explain why the world of cultural values – despite the multitude of practices of giving them significance – legitimately aspires to be the normative foundation of collective life, including economic life.
Production waste is one of the major sources of aluminium for recycling. Depending on the waste sources, it can be directly melted in furnaces, pre-cleaned and then melted, or due to the small size of the material (powder or dust) left without remelting. The latter form of waste includes chips formed during mechanical cutting (sawing) of aluminium and its alloys. In this study, this type of chips (with the dimensions not exceeding 1 mm) were melted. The obtained results of laboratory tests have indicated that even chips of such small sizes pressed into cylindrical compacts can be remelted. The high recovery yield (up to 94 %) and degree of metal coalescence (up to 100 %) were achieved via thermal removal of impurities under controlled conditions of a gas atmosphere (argon or/and air), followed with consolidation of chips at a pressure of minimum 170 MPa and melting at 750 oC with NaCl-KCl-Na3AlF6 salt flux.
This work attempts to use nitrogen gas as a shielding gas at the cutting zone, as well as for cooling purposes while machining stainless steel 304 (SS304) grade by Computer Numerical Control (CNC) lathe. The major influencing parameters of speed, feed and depth of cut were selected for experimentation with three levels each. Totally 27 experiments were conducted for dry cutting and N2 gaseous conditions. The major influencing parameters are optimized using Taguchi and Firefly Algorithm (FA). The improvement in obtaining better surface roughness and Material Removal Rate (MRR) is significant and the confirmation results revealed that the deviation of the experimental results from the empirical model is found to be within 5%. A significant improvement of reduction of the specific cutting energy by 2.57 % on average was achieved due to the reduction of friction at the cutting zone by nitrogen gas in CNC turning of SS 304 alloy.
The current passed by the stator coil of the permanent magnet synchronous motor (PMSM) provides rotating magnetic field, and the number of turns will directly affect the performance of PMSM. In order to analyze its influence on the PMSM performance, a 3 kW, 1500 r/min PMSM is taken as an example, and the 2D transient electromagnetic field model is established. The correctness of the model is verified by comparing the experimental data and calculated data. Firstly, the finite element method (FEM) is used to calculate the electromagnetic field of the PMSM. The performance parameters of the PMSM are obtained. On this basis, the influence of the number of turns on PMSM performance is quantitatively analyzed, including current, no-load back electromotive force (EMF), overload capacity and torque. In addition, the influence of the number of turns on eddy current loss is further studied, and its variation rule is obtained, and the variation mechanism of eddy current loss is revealed. Finally, the temperature field of the PMSM is analyzed by the coupling method of electromagnetic field and temperature field, and the temperature rise law of PMSM is obtained. The analysis of this paper provides reference and practical value for the optimization design of PMSM.
In the extensive polemic with the book Haunting History: For a Deconstructive Approach to the Past by Ethan Kleinberg, the reviewer comments on the innovative potential of deconstruction as it enables the conception of various scenarios of the future. Kleinberg’s reflections on the ontology (or hauntology) of the past are located within the current discussion about “the ontological turn.” The reviewer compares Kleinberg’s take on a deconstructive approach to the past with similar considerations presented by Sande Cohen in the US as well as by Keith Jenkins, Alun Munslow and, more recently, Berber Bevernage in Europe.
In the paper I present the famous argument between Peter F. Strawson and Bertrand Russell on definite descriptions. I do not go into details of the two rival solutions to the problem of definite descriptions. Instead I present the controversy against the background of two traditions within analytic philosophy, i.e. the philosophy of natural language (Strawson) and the philosophy of ideal language (Russell). In consequence, the aim of this paper is to sketch the principal features of the two traditions and to indicate their influence on the argument. In the first paragraph I discuss Russell’s theory of descriptions and present it as a result of dramatic changes that he had made in his philosophy before he finally presented them in On Denoting in 1905. The second paragraph deals with the two traditions within analytic philosophy after the linguistic turn and underlines the role of Strawson in the philosophy of natural language. In the third paragraph I analyze in detail Strawson’s arguments against the theory of descriptions and I focus on some details that are usually omitted in standard presentations. The fourth paragraph discusses Russell’s response to Strawson’s objections, i.e. the counter-arguments formulated from the standpoint of philosophy of ideal language. I end with some suggestions about how to reconcile both approaches.
This article analyses the first traces of postsecular turn in historical theory, arguing that they first emerged in Dominick LaCapra’s book History and Its Limits: Human, Animal, Violence (2009) and in Allan Megill’s subsequent polemic with that work. The author claims that what prevails in LaCapra’s narrative is the rhetoric of “resisting apocalypse”, thus demonstrating how he inscribes postsecular themes with the issue of trauma, together with its religious connotations. The discussion between LaCapra and Megill is treated here as a point of departure for considering the forms that the postsecular can take in historical theory.
This article examines Bolesław Prus's use of futurology and utopia in his short story Phantoms (Widziadła). A closer look at the story's images and their sequence not only gives us an insight into the author's philosophy of history but also reveals a utopian vision which can hardly be squared with the realism of his previous work. Thus ‘Widziadła’, written in 1911, can be seen as an important piece of evidence of a change in the writer's beliefs and worldview. It was at that late stage of his life that Prus, a hard-nosed realist and critic of the Romantics, turned into an impassioned idealist who, disillusioned with the world around him, sought refuge in literature. It was to be, however, a fiction like ‘Widziadła’, looking beyond the conventions of realism, unashamedly eclectic and visionary.