Mobilusis telefonas, raštas ir atmintis

Even though cultural actions are creative, they are not established ex nihilo. They are based on previous actions, their passive or active memory, and extension. Memory is impossible without forgetting. To remember, we have to choose what matters and what does not. The mechanism of memory is based on forgetfulness, which does not deny memory as such, but in a sense makes it passive. Passive memory (forgetfulness) can be transformed into active memory through the actions of actualization and reactivation. Writing is a form of passive memory that can be activated by intelligent reading. The aim of the article is to discuss the phenomenon of the mobile phone as an example of socio-cultural writing and to raise the question of the relationship between writing and memory. Based on the concepts of writing developed by the Italian philosopher Mauricio Ferraris, Derrida, and Husserl, I argue that writing is a model of cultural sedimentation and memory.

A fast and oblivious matrix compression algorithm for Volterra integral operators

The numerical solution of dynamical systems with memory requires the efficient evaluation of Volterra integral operators in an evolutionary manner. After appropriate discretization, the basic problem can be represented as a matrix-vector product with a lower diagonal but densely populated matrix. For typical applications, like fractional diffusion or large-scale dynamical systems with delay, the memory cost for storing the matrix approximations and complete history of the data then becomes prohibitive for an accurate numerical approximation. For Volterra integral operators of convolution type, the fast and oblivious convolution quadrature method of Schädle, Lopez-Fernandez, and Lubich resolves this issue and allows to compute the discretized evaluation with N time steps in $O(N \log N)$ O ( N log N ) complexity and only requires $O(\log N)$ O ( log N ) active memory to store a compressed version of the complete history of the data. We will show that this algorithm can be interpreted as an ${{\mathscr{H}}}$ H -matrix approximation of the underlying integral operator. A further improvement can thus be achieved, in principle, by resorting to ${{\mathscr{H}}}^{2}$ H 2 -matrix compression techniques. Following this idea, we formulate a variant of the ${{\mathscr{H}}}^{2}$ H 2 -matrix-vector product for discretized Volterra integral operators that can be performed in an evolutionary and oblivious manner and requires only O(N) operations and $O(\log N)$ O ( log N ) active memory. In addition to the acceleration, more general asymptotically smooth kernels can be treated and the algorithm does not require a priori knowledge of the number of time steps. The efficiency of the proposed method is demonstrated by application to some typical test problems.

Reliable Memory Model for Visual Tracking

Effectively learning the appearance change of a target is the key point of an online tracker. When occlusion and misalignment occur, the tracking results usually contain a great amount of background information, which heavily affects the ability of a tracker to distinguish between targets and backgrounds, eventually leading to tracking failure. To solve this problem, we propose a simple and robust reliable memory model. In particular, an adaptive evaluation strategy (AES) is proposed to assess the reliability of tracking results. AES combines the confidence of the tracker predictions and the similarity distance, which is between the current predicted result and the existing tracking results. Based on the reliable results of AES selection, we designed an active–frozen memory model to store reliable results. Training samples stored in active memory are used to update the tracker, while frozen memory temporarily stores inactive samples. The active–frozen memory model maintains the diversity of samples while satisfying the limitation of storage. We performed comprehensive experiments on five benchmarks: OTB-2013, OTB-2015, UAV123, Temple-color-128, and VOT2016. The experimental results show that our tracker achieves state-of-the-art performance.

4K-memristor analog-grade passive crossbar circuit

The superior density of passive analog-grade memristive crossbar circuits enables storing large neural network models directly on specialized neuromorphic chips to avoid costly off-chip communication. To ensure efficient use of such circuits in neuromorphic systems, memristor variations must be substantially lower than those of active memory devices. Here we report a 64 × 64 passive crossbar circuit with ~99% functional nonvolatile metal-oxide memristors. The fabrication technology is based on a foundry-compatible process with etch-down patterning and a low-temperature budget. The achieved <26% coefficient of variance in memristor switching voltages is sufficient for programming a 4K-pixel gray-scale pattern with a <4% relative tuning error on average. Analog properties are also successfully verified via experimental demonstration of a 64 × 10 vector-by-matrix multiplication with an average 1% relative conductance import accuracy to model the MNIST image classification by ex-situ trained single-layer perceptron, and modeling of a large-scale multilayer perceptron classifier based on more advanced conductance tuning algorithm.

Feminist collective memory and nostalgia in gynaecological self-help in contemporary Europe

Gynaecological self-help, a well-known and historical feminist practice from the Second Wave movements which aims at embodying a radical alternative to traditional reproductive politics, is resurging today in France, Switzerland and Belgium. Drawing on empirical observations and interviews, this article questions the links between feminist memory of self-help, the shaping of nostalgia and the production of a political feminist ‘we’. Born at the end of the 1960s in the United States, feminist self-help travelled internationally and was appropriated differently depending on national contexts. This ‘glorious’ history of self-help and, more importantly, its narrated memory, is central to contemporary European self-help activism, as observed in the three national contexts. Drawing on this insight, this article reveals the active memory-oriented emotional work of self-help activists. It examines the ways in which nostalgia for an imagined and lost past is actively and practically produced and encouraged in social movement practices, and highlights the specificity of the kind of collective feminist identity that it shapes and promotes in contemporary self-help politics.

The Effects of Active Memory Exercises on Intelligence Profile in Students With Specific Learning Disorder

Objective: Active memory is the search engine of the mind. Active memory is a cognitive function responsible for preserving instant information, its manipulation, and its use in thinking. This study aimed at investigating the effects of active memory practices on intelligence profiles in students with Specific Learning Disorder (SLD). Methods: This was a quasi-experimental study with a pretest-posttest and a control group design. The population of the study included elementary students of the East Bandpey region in Babol City, Iran, in 2019. The study participants were randomly divided into the experimental (21) and control (20) groups. The experimental group performed sixteen 45-minute active memory program sessions for 8 weeks, twice a week. Multivariate Analysis of Variance (MANOVA) was employed for data analysis. Results: Research findings suggested that educational interventions on the verbal comprehension, perceptual reasoning, active memory, and overall scale have led to a significant difference between the experimental and control groups (P=0.280); however, there was no significant difference concerning the processing speed scale between the study groups (P=0.280). Conclusion: The present study data suggested that educational interventions were the most influential factor on active memory and overall scale. Furthermore, applying active memory exercise, as a non-pharmacological approach, is recommended to improve the intelligence profile in children with SLD.

Fetish forgetting in the reproduction of capitalism

The capitalist oblivion does not include only plain erasure of the part of the past but is a structure of the perception of the world which is reproduced and has a fetish chararacter (reification). The past is perceived through the prism of ware and profits. The forgotten crimes of com, the role of oblivion in globalisation, the nature of contemporary memory constitutionalism and memory laws in the EU are considered. Capitalism is justified through glorious democratic past. The forgetting of capitalism?s own violence is embedded in the capitalist memory culture. The anti-totalitarian discourse is the highest official ?constitution of memory? in EU from which the official memories of the EU members are derived. The Holocaust is a conceptual lever of capitalist forgetting. It is a selective summary concept and metaphor for the integrated memory of the crimes of fascism and communism. There is no Holocaust in the official memory of the crimes of capitalism. The institutionalized memory of Left crimes is dominant. In this paper the attention is drawn to the marginalized and weakened memory of the Left. Also, some arguments on the reasons why rotting working class as a torn group is incapable for organized and active memory are being suggested.