From Re- to Pre- and Back Again

Tracing the complex history of the term ‘reenactment’, back to R.G. Collingwood’s philosophy of history, on the one hand, and popular practices of war reenactments and living history museums, on the other, a survey of its current contribution in art and museum practices highlights the importance of historicity — a category the postmodern was supposed to have vacated — in a wide range of examples, from Rod Dickinson and Jeremey Deller to Alexandra Pirici, Manuel Pelmuş, and Milo Rau. Performance reenactments, in particular, are premised on performance art having become historical, but also threaten to digest history in favour of a mere productivist mobilization for the needs of current attention economies. An alternative could be the attempt to counter historical with dramatic time in order to unlock unrealized possibilities and futures, as the term preenactment promises.

LITERATURE REVIEW ON TIRE COMPONENT REQUIREMENTS

This paper is a literature review about tire component requirements for innovation in tire construction. Herein are pointed out essential aspects expected in Tires’ structures from the mechanical point of view for future development of a realistic model for advanced simulation of tires (in miscellaneous operating conditions) and innovation in tire mechanics. Being composite structures, tires are made of many elements chosen with delicacy due to their intrinsic physical properties in regards to load effects. Since tires' mechanical behavior is directly linked to the parameters of its constituents (carcass, steel cord belt, and textile cord belt, namely), it is thereof imperative to grasp some solid pieces of knowledge about. Wherefore, the current contribution explored the mechanical requirements to be taken into account in the matrix (rubber) and reinforcements (steel cords and textile cords) for determining the inputs enabling to build up an accurate and simple computer model for improving tires simulation.

Short-Circuit Analysis of DER-Based Microgrids in Connected and Islanded Modes of Operation

Since microgrids should be able to smoothly operate in two distinct modes—grid-connected and islanded, their fault currents can widely fluctuate depending on the operational mode. When the microgrid is connected to the grid, the highest fault current, by far, is supplied by the utility grid. In this mode, the fault current contribution from distributed energy resources (DERs) is less than 20%. However, when the microgrid switches to the islanded mode, the fault current contribution from the utility grid is lost and DERs are the sole fault current sources. Thus, the overall fault current in the islanded mode is multiple times lower when compared to the grid connected mode. Moreover, most of the DERs are inverter-based, with limited fault currents, which further reduces the overall fault current in the islanded mode. With the rapid rise of the microgrid penetration around the globe, this phenomenon can adversely influence the relay protection, and thus the microgrid fault current needs to be precisely analyzed. Therefore, the main purpose of this paper is to thoroughly analyze the fault current differences in two distinct operation modes of a microgrid, and to consequently derive conclusions regarding the required improvements in fault calculations and relay protection analysis in emerging microgrids. A representative microgrid test bed is developed and modelled using the in-house developed software as well as in a state-of-the-art hardware-in-the-loop environment. Several different short-circuit faults were simulated and analyzed in both grid-connected and islanded modes. The results show that the fault currents significantly differ depending on the operating mode, and thus highly influence the protection system. Moreover, test results show that the fault calculation algorithms aimed at radial distribution grids, mostly used for microgrid fault calculations in the available literature, need to be further improved to provide precise and time-efficient results when the emerging microgrids are considered. These results provide a valuable insight into the current state of the microgrids’ fault calculation and protection and reveal several important directions for future research.

Method of peripheral vein detection using Electrical Impedance Tomography

The aim of the current contribution was to develop a method for locating arm veins in patients by using an electrical impedance tomography. Eight surface electrodes were placed on a simulated arm, separated at a fixed and equal distance from each other. The electrodes fed information about electrical impedance (conductivity) to EIDORS software. The three main phases (veins, muscle, and bone) each have different conductivity, which the device and software convert into a colour-coded tomograph displayed on a screen. The colour for blood on the image is previously set (in this case, red), revealing the location of the veins in the selected section of the arm. A sample run was made, successfully finding the correct location and size of the modelled vein, thus demonstrating the accurate operation of the device.

IQ and digital inequality: An empirical investigation

Cognitive intelligence is rarely discussed in the context of digital inequality for practical and normative reasons: substantial difficulties around measurements and the fact that it cannot (easily) be changed. In the current contribution, cognitive intelligence is studied in relation to resources and appropriation theory which explains digital inequality as a process of four successive phases of Internet access: motivational, material, skills, and usage. For the measurement of cognitive intelligence, we build on considerable efforts devoted to developing alternatives to cumbersome intelligence quotient (IQ) tests of intelligence. We conducted a two-wave online survey in the Netherlands, resulting in a sample of 1733 respondents. The importance of IQ was confirmed with direct positive effects on education, economic, social, and cultural resources, and on Internet attitude and skills. The results reveal several details that can enhance our understanding of the specific mechanisms through which IQ and education operate in digital inequalities.

Scientific product: solving the problem of assessing the science efficiency

The aim of the article is to identify limitations in the created and constantly changing approach to assessing the science eficiency, based on ratings and points given to a researcher, with a logical justification for a different approach, which is reduced to creating “a scientific product”. The problem of measuring the science effectiveness and evaluating scientific results is certainly broader, and it is connected with the existing system of statistical accounting, namely data that do not allow people, for example, to reliably estimate even the “knowledge economy” size as a sector or a highly productive workplace, as the level of manufacturability. If the methods for measuring these parameters are extremely imperfect, then in relation to science and scientific activity, the situation looks even more ambiguous, since the type of activity itself is extremely heterogeneous, and the so-called breakthrough results appear discretely, moreover, often even unexpectedly for the scholars themselves. The research methodology is presented by comparative analysis, approaches from the general theory of economic measurements. The main result comes down to the fact that, in the current mode, the researcher’s activity cannot be assessed by some points scored, but, in the author's opinion, it should be measured by the result of what scientific product is created by the researcher, taking into account weighting coefficients for scientific work experience and current contribution in accordance with the carried out researches. A scientific product is the content of scientific achievements; it suggests assessing the scientist's work at a high salary, reflecting the qualifications and work experience, as well as evaluating the current contribution. The system of remuneration for a scientist should be simple and understandable, fundamental science should become a part of the public sector of Russia, for which the tariff and qualification scale in terms of organizing remuneration is quite applicable. The main task of science is to develop its own apparatus of cognition and to solve urgent problems by scientific methods, as the necessity for settling them is high. To this end, it will be necessary to strengthen the position of the RAS, placing it within the framework of the public sector together with its institutes, restoring the coordinating function of the RAS governing bodies.

Realization of a Framework for Simulation-Based Large-Scale Shape Optimization Using Vertex Morphing

There is a significant tendency in the industry for automation of the engineering design process. This requires the capability of analyzing an existing design and proposing or ideally generating an optimal design using numerical optimization. In this context, efficient and robust realization of such a framework for numerical shape optimization is of prime importance. Another requirement of such a framework is modularity, such that the shape optimization can involve different physics. This requires that different physics solvers should be handled in black-box nature. The current contribution discusses the conceptualization and applications of a general framework for numerical shape optimization using the vertex morphing parametrization technique. We deal with both 2D and 3D shape optimization problems, of which 3D problems usually tend to be expensive and are candidates for special attention in terms of efficient and high-performance computing. The paper demonstrates the different aspects of the framework, together with the challenges in realizing them. Several numerical examples involving different physics and constraints are presented to show the flexibility and extendability of the framework.

Biographic Resonance Theory of Eudaimonic Media Entertainment

If media audiences experience a message as meaningful, they display eudaimonic responses such as mixed affect and self-transcendence. The current contribution elaborates on the causes and manifestations of meaningfulness and argues that resonances between entertainment content (characters, situations, decisions, or metaphors) and audience members’ biographic memories—particular recollections of critical life incidents or life crisis—generate experiences of meaning. Such biographic resonance is suggested to cause eudaimonic entertainment, specifically mixed-affect experiences that combine negative feelings associated with the audience member’s past or current life crisis with hope and other-praising emotions that emerge from the inspiration and advice obtained from the entertainment message. This chapter formalizes biographic resonance theory as postulated interaction of message attributes and audience members’ biographies and develop programmatic perspectives on theory extensions and testing as well as implications for entertainment effects on human well-being at the population level.

Retroactive interference model of forgetting

Memory and forgetting constitute two sides of the same coin, and although the first has been extensively investigated, the latter is often overlooked. A possible approach to better understand forgetting is to develop phenomenological models that implement its putative mechanisms in the most elementary way possible, and then experimentally test the theoretical predictions of these models. One such mechanism proposed in previous studies is retrograde interference, stating that a memory can be erased due to subsequently acquired memories. In the current contribution, we hypothesize that retrograde erasure is controlled by the relevant “importance” measures such that more important memories eliminate less important ones acquired earlier. We show that some versions of the resulting mathematical model are broadly compatible with the previously reported power-law forgetting time course and match well the results of our recognition experiments with long, randomly assembled streams of words.