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DOAJ Open Access 2025
Towards the Right to Cinematic Opacity: Navigating Transparency, Migration and Whiteness in Europe

Nadica Denić

This article traces the relationship between, on the one hand, the aesthetic values of opacity and transparency, and, on the other hand, the ethics and politics of Europe's regulation of migration. I approach transparency as inherently tied to white hegemony, which results in an aesthetic regime that keeps authority centralised, meaning stabilised, and identity regulated. An aesthetic of opacity, in contrast, resists these normative demands, instead claiming one's right to opacity: the right to preserve the irreducible singularity of one's identity in the face of white hegemony. I argue that Europa, “Based on a True Story” (2019) embodies Rwandan filmmaker Kivu Ruhorahoza's process of navigating the regime of transparency to advance migrants’ right to opacity as a mode of resistance against the colonial and racial ordering of Europe's contemporary border regime. Combining documentary and fiction, Europa portrays Ruhorahoza's own experience of exclusion as framing a fictional story of illegalisation and deportation at the centre of which is Simon (Oris Erhuero), a Nigerian migrant in Britain whose asylum request has been rejected. By bringing Édouard Glissant's work on opacity, relationality and errantry into conversation with Europa's portrayal of the position of migrants in contemporary Europe, this article articulates the ethico-political stakes of Europa's aesthetic of opacity, as advanced by the film's interstitiality regarding cinematic norms, a first-person plural mode of narration and the mobilisation of the spectral metaphor . At the core of Europa's claim to opacity, I propose, is a call for a new form of identification in Europe, as a relation among opacities beyond national frontiers.

Motion pictures, Philosophy (General)
arXiv Open Access 2025
Robust and Modular Multi-Limb Synchronization in Motion Stack for Space Robots with Trajectory Clamping via Hypersphere

Elian Neppel, Ashutosh Mishra, Shamistan Karimov et al.

Modular robotics holds immense potential for space exploration, where reliability, repairability, and reusability are critical for cost-effective missions. Coordination between heterogeneous units is paramount for precision tasks -- whether in manipulation, legged locomotion, or multi-robot interaction. Such modular systems introduce challenges far exceeding those in monolithic robot architectures. This study presents a robust method for synchronizing the trajectories of multiple heterogeneous actuators, adapting dynamically to system variations with minimal system knowledge. This design makes it inherently robot-agnostic, thus highly suited for modularity. To ensure smooth trajectory adherence, the multidimensional state is constrained within a hypersphere representing the allowable deviation. The distance metric can be adapted hence, depending on the task and system under control, deformation of the constraint region is possible. This approach is compatible with a wide range of robotic platforms and serves as a core interface for Motion-Stack, our new open-source universal framework for limb coordination (available at https://github.com/2lian/Motion-Stack ). The method is validated by synchronizing the end-effectors of six highly heterogeneous robotic limbs, evaluating both trajectory adherence and recovery from significant external disturbances.

arXiv Open Access 2025
Starlink in Northern Europe: A New Look at Stationary and In-motion Performance

Muhammad Asad Ullah, Antti Heikkinen, Mikko Uitto et al.

Starlink has introduced the Flat High Performance (FHP) terminal, specifically designed to support the vehicles and the vessels in motion as well as the high-demand stationary users. The research on FHP terminal throughput analysis remains limited, only a few existing studies evaluate FHP, focusing on the limited parameters and scenarios. This paper evaluates the FHP terminal's performance in Finland, Northern Europe. We examine round-trip time (RTT), uplink, and downlink throughput for both stationary and in-motion use. We measure network efficiency across six geographically diverse servers and get insights of network routing strategies. Our results show that Starlink provides high-speed, low-RTT connectivity, however, the throughput experiences fluctuations with slight degradation when in motion. Additionally, we compare Starlink and terrestrial network RTT and possible routing paths.

DOAJ Open Access 2024
La collecte statistique sur le commerce cinématographique entre les États-Unis et l’Europe: une esquisse historique

Elena

This article provides a history of the implementation, in the United States and Europe, of collection processes on cinema attendance, on the results obtained by films in terms of admissions or box-office receipts, and on the international trade of films. The contribution shows how the US industry was already from the 1910s concerned with obtaining a statistical portrait of European markets while efforts to set up an integrated European statistical tool, imagined in the 1920s, did not come to fruition. This was only achieved in the 1990s with the creation of the European Audiovisual Observatory and its LUMIERE database.

Motion pictures
DOAJ Open Access 2024
Hamiltonian Computational Chemistry: Geometrical Structures in Chemical Dynamics and Kinetics

Stavros C. Farantos

The common geometrical (symplectic) structures of classical mechanics, quantum mechanics, and classical thermodynamics are unveiled with three pictures. These cardinal theories, mainly at the non-relativistic approximation, are the cornerstones for studying chemical dynamics and chemical kinetics. Working in extended phase spaces, we show that the physical states of integrable dynamical systems are depicted by Lagrangian submanifolds embedded in phase space. Observable quantities are calculated by properly transforming the extended phase space onto a reduced space, and trajectories are integrated by solving Hamilton’s equations of motion. After defining a Riemannian metric, we can also estimate the length between two states. Local constants of motion are investigated by integrating Jacobi fields and solving the variational linear equations. Diagonalizing the symplectic fundamental matrix, eigenvalues equal to one reveal the number of constants of motion. For conservative systems, geometrical quantum mechanics has proved that solving the Schrödinger equation in extended Hilbert space, which incorporates the quantum phase, is equivalent to solving Hamilton’s equations in the projective Hilbert space. In classical thermodynamics, we take entropy and energy as canonical variables to construct the extended phase space and to represent the Lagrangian submanifold. Hamilton’s and variational equations are written and solved in the same fashion as in classical mechanics. Solvers based on high-order finite differences for numerically solving Hamilton’s, variational, and Schrödinger equations are described. Employing the Hénon–Heiles two-dimensional nonlinear model, representative results for time-dependent, quantum, and dissipative macroscopic systems are shown to illustrate concepts and methods. High-order finite-difference algorithms, despite their accuracy in low-dimensional systems, require substantial computer resources when they are applied to systems with many degrees of freedom, such as polyatomic molecules. We discuss recent research progress in employing Hamiltonian neural networks for solving Hamilton’s equations. It turns out that Hamiltonian geometry, shared with all physical theories, yields the necessary and sufficient conditions for the mutual assistance of humans and machines in deep-learning processes.

Science, Astrophysics
arXiv Open Access 2024
Data-Driven Portfolio Management for Motion Pictures Industry: A New Data-Driven Optimization Methodology Using a Large Language Model as the Expert

Mohammad Alipour-Vaezi, Kwok-Leung Tsui

Portfolio management is one of the unresponded problems of the Motion Pictures Industry (MPI). To design an optimal portfolio for an MPI distributor, it is essential to predict the box office of each project. Moreover, for an accurate box office prediction, it is critical to consider the effect of the celebrities involved in each MPI project, which was impossible with any precedent expert-based method. Additionally, the asymmetric characteristic of MPI data decreases the performance of any predictive algorithm. In this paper, firstly, the fame score of the celebrities is determined using a large language model. Then, to tackle the asymmetric character of MPI's data, projects are classified. Furthermore, the box office prediction takes place for each class of projects. Finally, using a hybrid multi-attribute decision-making technique, the preferability of each project for the distributor is calculated, and benefiting from a bi-objective optimization model, the optimal portfolio is designed.

en cs.LG, cs.AI
arXiv Open Access 2024
MOSA: Music Motion with Semantic Annotation Dataset for Cross-Modal Music Processing

Yu-Fen Huang, Nikki Moran, Simon Coleman et al.

In cross-modal music processing, translation between visual, auditory, and semantic content opens up new possibilities as well as challenges. The construction of such a transformative scheme depends upon a benchmark corpus with a comprehensive data infrastructure. In particular, the assembly of a large-scale cross-modal dataset presents major challenges. In this paper, we present the MOSA (Music mOtion with Semantic Annotation) dataset, which contains high quality 3-D motion capture data, aligned audio recordings, and note-by-note semantic annotations of pitch, beat, phrase, dynamic, articulation, and harmony for 742 professional music performances by 23 professional musicians, comprising more than 30 hours and 570 K notes of data. To our knowledge, this is the largest cross-modal music dataset with note-level annotations to date. To demonstrate the usage of the MOSA dataset, we present several innovative cross-modal music information retrieval (MIR) and musical content generation tasks, including the detection of beats, downbeats, phrase, and expressive contents from audio, video and motion data, and the generation of musicians' body motion from given music audio. The dataset and codes are available alongside this publication (https://github.com/yufenhuang/MOSA-Music-mOtion-and-Semantic-Annotation-dataset).

en cs.SD, cs.AI
DOAJ Open Access 2023
Powidoki twórczości Federica Felliniego w "Mieście Snu" Krystiana Lupy

Katarzyna Gołos-Dąbrowska

The main purpose of this article is to analyze Krystian Lupa’s production The City of Dream (TR Warsaw, 2012), based on the novel The Other Side by Alfred Kubin, relative to the work of Federico Fellini. The Polish director, who very often refers to the medium of film in his theatre productions, this time turned to the work of Federico Fellini. One of the themes of the play is the process of making a fictional documentary film by the Italian director. Lupa refers to Fellini’s work by stylizing some scenes from his films. He “borrows” characters from the filmmaker’s motion pictures and the Italian’s biography. He also adapts scenes from Fellini’s feature films and commercials. The purpose of the text is to highlight, analyze, and interpret the intertextual references found in the play.

Ethnology. Social and cultural anthropology, Literature (General)
arXiv Open Access 2022
Gaussian Processes for real-time 3D motion and uncertainty estimation during MR-guided radiotherapy

Niek R. F. Huttinga, Tom Bruijnen, Cornelis A. T. van den Berg et al.

Respiratory motion during radiotherapy causes uncertainty in the tumor's location, which is typically addressed by an increased radiation area and a decreased dose. As a result, the treatments' efficacy is reduced. The recently proposed hybrid MR-linac scanner holds the promise to efficiently deal with such respiratory motion through real-time adaptive MR-guided radiotherapy (MRgRT). For MRgRT, motion-fields should be estimated from MR-data and the radiotherapy plan should be adapted in real-time according to the estimated motion-fields. All of this should be performed with a total latency of maximally 200 ms, including data acquisition and reconstruction. A measure of confidence in such estimated motion-fields is highly desirable, for instance to ensure the patient's safety in case of unexpected and undesirable motion. In this work, we propose a framework based on Gaussian Processes to infer 3D motion-fields and uncertainty maps in real-time from only three readouts of MR-data. We demonstrated an inference frame rate up to 69 Hz including data acquisition and reconstruction, thereby exploiting the limited amount of required MR-data. Additionally, we designed a rejection criterion based on the motion-field uncertainty maps to demonstrate the framework's potential for quality assurance. The framework was validated in silico and in vivo on healthy volunteer data (n=5) acquired using an MR-linac, thereby taking into account different breathing patterns and controlled bulk motion. Results indicate end-point-errors with a 75th percentile below 1mm in silico, and a correct detection of erroneous motion estimates with the rejection criterion. Altogether, the results show the potential of the framework for application in real-time MR-guided radiotherapy with an MR-linac.

en physics.med-ph
arXiv Open Access 2022
Optical measurement of superluminal motion in the neutron-star merger GW170817

Kunal P. Mooley, Jay Anderson, Wenbin Lu

The afterglow of the binary neutron star merger GW170817 gave evidence for a structured relativistic jet and a link between such mergers and short gamma-ray bursts. Superluminal motion, found using radio very long baseline interferometry (VLBI), together with the afterglow light curve provided constraints on the viewing angle (14-28 degrees), the opening angle of the jet core (less than about 5 degrees), and a modest limit on the initial Lorentz factor of the jet core (more than 4). Here we report on another superluminal motion measurement, at seven times the speed of light, leveraging Hubble Space Telescope precision astrometry and previous radio VLBI data of GW170817. We thereby obtain a unique measurement of the Lorentz factor of the wing of the structured jet, as well as substantially improved constraints on the viewing angle (19-25 degrees) and the initial Lorentz factor of the jet core (more than 40).

en astro-ph.HE, astro-ph.CO
arXiv Open Access 2022
Probabilistic picture for particle number densities in stretched tips of the branching Brownian motion

Anh Dung Le, Alfred H. Mueller, Stéphane Munier

In the framework of a stochastic picture for the one-dimensional branching Brownian motion, we compute the probability density of the number of particles near the rightmost one at a time $T$, that we take very large, when this extreme particle is conditioned to arrive at a predefined position $x_T$ chosen far ahead of its expected position $m_T$. We recover the previously-conjectured fact that the typical number density of particles a distance $Δ$ to the left of the lead particle, when both $Δ$ and $x_T-Δ-m_T$ are large, is smaller than the mean number density by a factor proportional to $e^{-ζΔ^{2/3}}$, where $ζ$ is a constant that was so far undetermined. Our picture leads to an expression for the probability density of the particle number, from which a value for $ζ$ may be inferred.

en cond-mat.stat-mech, hep-ph
DOAJ Open Access 2021
Cinema as a form of composition

Michele Guerra

Technique and creativity Having been called upon to provide a contribution to a publication dedicated to “Techne”, I feel it is fitting to start from the theme of technique, given that for too many years now, we have fruitlessly attempted to understand the inner workings of cinema whilst disregarding the element of technique. And this has posed a significant problem in our field of study, as it would be impossible to gain a true understanding of what cinema is without immersing ourselves in the technical and industrial culture of the 19th century. It was within this culture that a desire was born: to mould the imaginary through the new techniques of reproduction and transfiguration of reality through images. Studying the development of the so-called “pre-cinema” – i.e. the period up to the conventional birth of cinema on 28 December 1895 with the presentation of the Cinématographe Lumière – we discover that the technical history of cinema is not only almost more enthralling than its artistic and cultural history, but that it contains all the great theoretical, philosophical and scientific insights that we need to help us understand the social, economic and cultural impact that cinema had on the culture of the 20th century. At the 1900 Paris Exposition, when cinema had already existed in some form for a few years, when the first few short films of narrative fiction also already existed, the cinematograph was placed in the Pavilion of Technical Discoveries, to emphasise the fact that the first wonder, this element of unparalleled novelty and modernity, was still there, in technique, in this marvel of innovation and creativity. I would like to express my idea through the words of Franco Moretti, who claims in one of his most recent works that it is only possible to understand form through the forces that pulsate through it and press on it from beneath, finally allowing the form itself to come to the surface and make itself visible and comprehensible to our senses. As such, the cinematic form – that which appears on the screen, that which is now so familiar to us, that which each of us has now internalised, that has even somehow become capable of configuring our way of thinking, imagining, dreaming – that form is underpinned by forces that allow it to eventually make its way onto the screen and become artistic and narrative substance. And those forces are the forces of technique, the forces of industry, the economic, political and social forces without which we could never hope to understand cinema. One of the issues that I always make a point of addressing in the first few lessons with my students is that if they think that the history of cinema is made up of films, directors, narrative plots to be understood, perhaps even retold in some way, then they are entirely on the wrong track; if, on the other hand, they understand that it is the story of an institution with economic, political and social drivers within it that can, in some way, allow us to come to the great creators, the great titles, but that without a firm grasp of those drivers, there is no point in even attempting to explore it, then they are on the right track. As I see it, cinema in the twentieth century was a great democratic, interclassist laboratory such as no other art has ever been, and this occurred thanks to the fact that what underpinned it was an industrial reasoning: it had to respond to the capital invested in it, it had to make money, and as such, it had to reach the largest possible number of people, immersing it into a wholly unprecedented relational situation. The aim was to be as inclusive as possible, ultimately giving rise to the idea that cinema could not be autonomous, as other forms of art could be, but that it must instead be able to negotiate all the various forces acting upon it, pushing it in every direction. This concept of negotiation is one which has been explored in great detail by one of the greatest film theorists of our modern age, Francesco Casetti. In a 2005 book entitled “Eye of the Century”, which I consider to be a very important work, Casetti actually argues that cinema has proven itself to be the art form most capable of adhering to the complexity and fast pace of the short century, and that it is for this very reason that its golden age (in the broadest sense) can be contained within the span of just a hundred years. The fact that cinema was the true epistemological driving force of 20th-century modernity – a position now usurped by the Internet – is not, in my opinion, something that diminishes the strength of cinema, but rather an element of even greater interest. Casetti posits that cinema was the great negotiator of new cultural needs, of the need to look at art in a different way, of the willingness to adapt to technique and technology: indeed, the form of cinema has always changed according to the techniques and technologies that it has brought to the table or established a dialogue with on a number of occasions. Barry Salt, whose background is in physics, wrote an important book – publishing it at his own expense, as a mark of how difficult it is to work in certain fields – entitled “Film Style and Technology”, in which he calls upon us stop writing the history of cinema starting from the creators, from the spirit of the time, from the great cultural and historical questions, and instead to start afresh by following the techniques available over the course of its development. Throughout the history of cinema, the creation of certain films has been the result of a particular set of technical conditions: having a certain type of film, a certain type of camera, only being able to move in a certain way, needing a certain level of lighting, having an entire arsenal of equipment that was very difficult to move and handle; and as the equipment, medium and techniques changed and evolved over the years, so too did the type of cinema that we were able to make. This means framing the history of cinema and film theory in terms of the techniques that were available, and starting from there: of course, whilst Barry Salt’s somewhat provocative suggestion by no means cancels out the entire cultural, artistic and aesthetic discourse in cinema – which remains fundamental – it nonetheless raises an interesting point, as if we fail to consider the methods and techniques of production, we will probably never truly grasp what cinema is. These considerations also help us to understand just how vast the “construction site” of cinema is – the sort of “factory” that lies behind the production of any given film. Erwin Panofsky wrote a single essay on cinema in the 1930s entitled “Style and Medium in the Motion Pictures” – a very intelligent piece, as one would expect from Panofsky – in which at a certain point, he compares the construction site of the cinema to those of Gothic cathedrals, which were also under an immense amount of pressure from different forces, namely religious ones, but also socio-political and economic forces which ultimately shaped – in the case of the Gothic cathedral and its development – an idea of the relationship between the earth and the otherworldly. The same could be said for cinema, because it also involves starting with something very earthly, very grounded, which is then capable of unleashing an idea of imaginary metamorphosis. Some scholars, such as Edgar Morin, will say that cinema is increasingly becoming the new supernatural, the world of contemporary gods, as religion gradually gives way to other forms of deification. Panofsky’s image is a very focused one: by making film production into a construction site, which to all intents and purposes it is, he leads us to understand that there are different forces at work, represented by a producer, a scriptwriter, a director, but also a workforce, the simple labourers, as is always the case in large construction sites, calling into question the idea of who the “creator” truly is. So much so that cinema, now more than ever before, is reconsidering the question of authorship, moving towards a “history of cinema without names” in an attempt to combat the “policy of the author” which, in the 1950s, especially in France, identified the director as the de facto author of the film. Today, we are still in that position, with the director still considered the author of the film, but that was not always so: back in the 1910s, in the United States, the author of the film was the scriptwriter, the person who wrote it (as is now the case for TV series, where they have once again taken pride of place as the showrunner, the creator, the true author of the series, and nobody remembers the names of the directors of the individual episodes); or at times, it can be the producer, as was the case for a long time when the Oscar for Best Picture, for example, was accepted by the producer in their capacity as the commissioner, as the “owner” of the work. As such, the theme of authorship is a very controversial one indeed, but one which helps us to understand the great meeting of minds that goes into the production of a film, starting with the technicians, of course, but also including the actors. Occasionally, a film is even attributed to the name of a star, almost as if to declare that that film is theirs, in that it is their body and their talent as an actor lending it a signature that provides far more of a draw to audiences than the name of the director does. In light of this, the theme of authorship, which Panofsky raised in the 1930s through the example of the Gothic cathedral, which ultimately does not have a single creator, is one which uses the image of the construction site to also help us to better understand what kind of development a film production can go through and to what extent this affects its critical and historical reception; as such, grouping films together based on their director means doing something that, whilst certainly not incorrect in itself, precludes other avenues of interpretation and analysis which could have favoured or could still favour a different reading of the “cinematographic construction site”.   Design and execution The great classic Hollywood film industry was a model that, although it no longer exists in the same form today, unquestionably made an indelible mark at a global level on the history not only of cinema, but more broadly, of the culture of the 20th century. The industry involved a very strong vertical system resembling an assembly line, revolving around producers, who had a high level of decision-making autonomy and a great deal of expertise, often inclined towards a certain genre of film and therefore capable of bringing together the exact kinds of skills and visions required to make that particular film. The history of classic American cinema is one that can also be reconstructed around the units that these producers would form. The “majors”, along with the so-called “minors”, were put together like football teams, with a chairman flanked by figures whom we would nowadays refer to as a sporting director and a managing director, who built the team based on specific ideas, “buying” directors, scriptwriters, scenographers, directors of photography, and even actors and actresses who generally worked almost exclusively for their major – although they could occasionally be “loaned out” to other studios. This system led to a very marked characterisation and allowed for the film to be designed in a highly consistent, recognisable way in an age when genres reigned supreme and there was the idea that in order to keep the audience coming back, it was important to provide certain reassurances about what they would see: anyone going to see a Western knew what sorts of characters and storylines to expect, with the same applying to a musical, a crime film, a comedy, a melodrama, and so on. The star system served to fuel this working method, with these major actors also representing both forces and materials in the hands of an approach to the filmmaking which had the ultimate objective of constructing the perfect film, in which everything had to function according to a rule rooted in both the aesthetic and the economic. Gore Vidal wrote that from 1939 onwards, Hollywood did not produce a single “wrong” film: indeed, whilst certainly hyperbolic, this claim confirms that that system produced films that were never wrong, never off-key, but instead always perfectly in tune with what the studios wished to achieve.  Whilst this long-entrenched system of yesteryear ultimately imploded due to certain historical phenomena that determined it to be outdated, the way of thinking about production has not changed all that much, with film design remaining tied to a professional approach that is still rooted within it. The overwhelming majority of productions still start from a system which analyses the market and the possible economic impact of the film, before even starting to tackle the various steps that lead up to the creation of the film itself.  Following production systems and the ways in which they have changed, in terms of both the technology and the cultural contexts, also involves taking stock of the still considerable differences that exist between approaches to filmmaking in different countries, or indeed the similarities linking highly disparate economic systems (consider, for example, India’s “Bollywood” or Nigeria’s “Nollywood”: two incredibly strong film industries that we are not generally familiar with as they lack global distribution, although they are built very solidly). In other words, any attempt to study Italian cinema and American cinema – to stay within this double field – with the same yardstick is unthinkable, precisely because the context of their production and design is completely different.   Composition and innovation Studying the publications on cinema in the United States in the early 1900s – which, from about 1911 to 1923, offers us a revealing insight into the attempts made to garner an in-depth understanding of how this new storytelling machine worked and the development of the first real cultural industry of the modern age – casts light on the centrality of the issues of design and composition. I remain convinced that without reading and understanding that debate, it is very difficult to understand why cinema is as we have come to be familiar with it today. Many educational works investigated the inner workings of cinema, and some, having understood them, suggested that they were capable of teaching others to do so. These publications have almost never been translated into Italian and remain seldom studied even in the US, and yet they are absolutely crucial for understanding how cinema established itself on an industrial and aesthetic level. There are two key words that crop up time and time again in these books, the first being “action”, one of the first words uttered when a film starts rolling: “lights, camera, action”. This collection of terms is interesting in that “motore” highlights the presence of a machine that has to be started up, followed by “action”, which expresses that something must happen at that moment in front of that machine, otherwise the film will not exist. As such, “action” – a term to which I have devoted some of my studies – is a fundamental word here in that it represents a sort of moment of birth of the film that is very clear – tangible, even. The other word is “composition”, and this is an even more interesting word with a history that deserves a closer look: the first professor of cinema in history, Victor Oscar Freeburg (I edited the Italian translation of his textbook “The Art of Photoplay Making”, published in 1918), took up his position at Columbia University in 1915 and, in doing so, took on the task of teaching the first ever university course in cinema. Whilst Freeburg was, for his time, a very well-educated and highly-qualified person, having studied at Yale and then obtained his doctorate in theatre at Columbia, cinema was not entirely his field of expertise. He was asked to teach a course entitled “Photoplay Writing”. At the time, a film was known as a “photoplay”, in that it was a photographed play of sorts, and the fact that the central topic of the course was photoplay writing makes it clear that back then, the scriptwriter was considered the main author of the work. From this point of view, it made sense to entrust the teaching of cinema to an expert in theatre, based on the idea that it was useful to first and foremost teach a sort of photographable dramaturgy. However, upon arriving at Columbia, Freeburg soon realised whilst preparing his course that “photoplay writing” risked misleading the students, as it is not enough to simply write a story in order to make a film; as such, he decided to change the title of his course to “photoplay composition”. This apparently minor alteration, from “writing” to “composition”, in fact marked a decisive conceptual shift in that it highlighted that it was no longer enough to merely write: one had to “compose”. So it was that the author of a film became, according to Freeburg, not the scriptwriter or director, but the “cinema composer” (a term of his own coinage), thus directing and broadening the concept of composition towards music, on the one hand, and architecture, on the other. We are often inclined to think that cinema has inherited expressive modules that come partly from literature, partly from theatre and partly from painting, but in actual fact, what Freeburg helps us to understand is that there are strong elements of music and architecture in a film, emphasising the lofty theme of the project. In his book, he explores at great length the relationship between static and dynamic forms in cinema, a topic that few have ever addressed in that way and that again, does not immediately spring to mind as applicable to a film. I believe that those initial intuitions were the result of a reflection unhindered by all the prejudices and preconceived notions that subsequently began to condition film studies as a discipline, and I feel that they are of great use to use today because they guide us, on the one hand, towards a symphonic idea of filmmaking, and on the other, towards an idea that preserves the fairly clear imprint of architecture.   Space-Time In cinema as in architecture, the relationship between space and time is a crucial theme: in every textbook, space and time are amongst the first chapters to be studied precisely because in cinema, they undergo a process of metamorphosis – as Edgar Morin would say – which is vital to constructing the intermediate world of film. Indeed, from both a temporal and a spatial point of view, cinema provides a kind of ubiquitous opportunity to overlap different temporalities and spatialities, to move freely from one space to another, but above all, to construct new systems of time. The rules of film editing – especially so-called “invisible editing”, i.e. classical editing that conceals its own presence – are rules built upon specific and precise connections that hold together different spaces – even distant ones – whilst nonetheless giving the impression of unity, of contiguity, of everything that cinema never is in reality, because cinema is constantly fragmented and interrupted, even though we very often perceive it in continuity. As such, from both a spatial and a temporal perspective, there are technical studies that explain the rules of how to edit so as to give the idea of spatial continuity, as well as theoretical studies that explain how cinema has transformed our sense of space and time. To mark the beginning of Parma’s run as Italy’s Capital of Culture, an exhibition was organised entitled “Time Machine. Seeing and Experiencing Time”, curated by Antonio Somaini, with the challenge of demonstrating how cinema, from its earliest experiments to the digital age, has managed to manipulate and transform time, profoundly affecting our way of engaging with it.  The themes of time and space are vital to understanding cinema, including from a philosophical point of view: in two of Gilles Deleuze’s seminal volumes, “The Movement Image” and “The Time Image”, the issues of space and time become the two great paradigms not only for explaining cinema, but also – as Deleuze himself says – for explaining a certain 20th-century philosophy. Deleuze succeeds in a truly impressive endeavour, namely linking cinema to philosophical reflection – indeed, making cinema into an instrument of philosophical thought; this heteronomy of filmmaking is then also transferred to its ability to become an instrument that goes beyond its own existence to become a reflection on the century that saw it as a protagonist of sorts. Don Ihde argues that every era has a technical discovery that somehow becomes what he calls an “epistemological engine”: a tool that opens up a system of thought that would never have been possible without that discovery. One of the many examples of this over the centuries is the camera obscura, but we could also name cinema as the defining discovery for 20th-century thought: indeed, cinema is indispensable for understanding the 20th century, just as the Internet is for understanding our way of thinking in the 21st century.    Real-virtual Nowadays, the film industry is facing the crisis of cinema closures, ultimately caused by ever-spreading media platforms and the power of the economic competition that they are exerting by aggressively entering the field of production and distribution, albeit with a different angle on the age-old desire to garner audiences. Just a few days ago, Martin Scorsese was lamenting the fact that on these platforms, the artistic project is in danger of foundering, as excellent projects are placed in a catalogue alongside a series of products of varying quality, thus confusing the viewer. A few years ago, during the opening ceremony of the academic year at the University of Southern California, Steven Spielberg and George Lucas expressed the same concept about the future of cinema in a different way. Lucas argued that cinemas would soon have to become incredibly high-tech places where people can have an experience that is impossible to reproduce elsewhere, with a ticket price that takes into account the expanded and increased experiential value on offer thanks to the new technologies used. Spielberg, meanwhile, observed that cinemas will manage to survive if they manage to transform the cinemagoer from a simple viewer into a player, an actor of sorts. The history of cinema has always been marked by continuous adaptation to technological evolutions. I do not believe that cinema will ever end. Jean-Luc Godard, one of the great masters of the Nouvelle Vague, once said in an interview: «I am very sorry not to have witnessed the birth of cinema, but I am sure that I will witness its death». Godard, who was born in 1930, is still alive. Since its origins, cinema has always transformed rather than dying. Raymond Bellour says that cinema is an art that never finishes finishing, a phrase that encapsulates the beauty and the secret of cinema: an art that never quite finishes finishing is an art that is always on the very edge of the precipice but never falls off, although it leans farther and farther over that edge. This is undoubtedly down to cinema’s ability to continually keep up with technique and technology, and in doing so to move – even to a different medium – to relocate, as contemporary theorists say, even finally moving out of cinemas themselves to shift onto platforms and tablets, yet all without ever ceasing to be cinema. That said, we should give everything we’ve got to ensure that cinemas survive.

Aesthetics of cities. City planning and beautifying, Architectural drawing and design
DOAJ Open Access 2021
High Inclusiveness and Accuracy Motion Blur Real-Time Gesture Recognition Based on YOLOv4 Model Combined Attention Mechanism and DeblurGanv2

Hongchao Zhuang, Yilu Xia, Ning Wang et al.

The combination of gesture recognition and aerospace exploration robots can realize the efficient non-contact control of the robots. In the harsh aerospace environment, the captured gesture images are usually blurred and damaged inevitably. The motion blurred images not only cause part of the transmitted information to be lost, but also affect the effect of neural network training in the later stage. To improve the speed and accuracy of motion blurred gestures recognition, the algorithm of YOLOv4 (You Only Look Once, vision 4) is studied from the two aspects of motion blurred image processing and model optimization. The DeblurGanv2 is employed to remove the motion blur of the gestures in YOLOv4 network input pictures. In terms of model structure, the K-means++ algorithm is used to cluster the priori boxes for obtaining the more appropriate size parameters of the priori boxes. The CBAM attention mechanism and SPP (spatial pyramid pooling layer) structure are added to YOLOv4 model to improve the efficiency of network learning. The dataset for network training is designed for the human–computer interaction in the aerospace space. To reduce the redundant features of the captured images and enhance the effect of model training, the Wiener filter and bilateral filter are superimposed on the blurred images in the dataset to simply remove the motion blur. The augmentation of the model is executed by imitating different environments. A YOLOv4-gesture model is built, which collaborates with K-means++ algorithm, the CBAM and SPP mechanism. A DeblurGanv2 model is built to process the input images of the YOLOv4 target recognition. The YOLOv4-motion-blur-gesture model is composed of the YOLOv4-gesture and the DeblurGanv2. The augmented and enhanced gesture data set is used to simulate the model training. The experimental results demonstrate that the YOLOv4-motion-blur-gesture model has relatively better performance. The proposed model has the high inclusiveness and accuracy recognition effect in the real-time interaction of motion blur gestures, it improves the network training speed by 30%, the target detection accuracy by 10%, and the value of mAP by about 10%. The constructed YOLOv4-motion-blur-gesture model has a stable performance. It can not only meet the real-time human–computer interaction in aerospace space under real-time complex conditions, but also can be applied to other application environments under complex backgrounds requiring real-time detection.

Technology, Engineering (General). Civil engineering (General)
DOAJ Open Access 2021
O feminino em "Chega de Saudade" de Laís Bodanzky

Maria Fernanda Cavassani, Miriam Cristina Carlos Silva

Esse artigo compõe uma pesquisa maior, que resultou em uma dissertação de mestrado, na qual se buscou compreender as representações do feminino contemporâneo nas obras da cineasta brasileira Laís Bodanzky. Para tanto, as observações foram feitas a partir das metodologias de Análise de Narrativa, propostas por Cândida Vilares Gancho (2006), e da Análise Fílmica, proposta por Francis Vanoye e Anne Goliot-Lété (2012). No presente trabalho, o recorte se faz a partir da análise do filme "Chega de Saudade" (2007), com resultados que apontam para uma narrativa que debate, de maneira poética, o envelhecer da mulher. Trata-se, por fim, de uma obra contemporânea, com enredo psicológico, que propõe a quebra de paradigmas sociais patriarcais e machistas, sinalizando para a representação de um feminino possível, sob a ótica de uma cineasta mulher.

Visual arts, Motion pictures
arXiv Open Access 2021
Real-time non-rigid 3D respiratory motion estimation for MR-guided radiotherapy using MR-MOTUS

Niek R. F. Huttinga, Tom Bruijnen, Cornelis A. T. van den Berg et al.

The MR-Linac is a combination of an MR-scanner and radiotherapy linear accelerator (Linac) which holds the promise to increase the precision of radiotherapy treatments with MR-guided radiotherapy by monitoring motion during radiotherapy with MRI, and adjusting the radiotherapy plan accordingly. Optimal MR-guidance for respiratory motion during radiotherapy requires MR-based 3D motion estimation with a latency of 200-500 ms. Currently this is still challenging since typical methods rely on MR-images, and are therefore limited by the 3D MR-imaging latency. In this work, we present a method to perform non-rigid 3D respiratory motion estimation with 170 ms latency, including both acquisition and reconstruction. The proposed method called real-time low-rank MR-MOTUS reconstructs motion-fields directly from k-space data, and leverages an explicit low-rank decomposition of motion-fields to split the large scale 3D+t motion-field reconstruction problem posed in our previous work into two parts: (I) a medium-scale offline preparation phase and (II) a small-scale online inference phase which exploits the results of the offline phase for real-time computations. The method was validated on free-breathing data of five volunteers, acquired with a 1.5T Elekta Unity MR-Linac. Results show that the reconstructed 3D motion-field are anatomically plausible, highly correlated with a self-navigation motion surrogate (R = 0.975 +/- 0.0110), and can be reconstructed with a total latency of 170 ms that is sufficient for real-time MR-guided abdominal radiotherapy.

en physics.med-ph, eess.IV
DOAJ Open Access 2020
Book review of Demența digitală. Cum ne tulburã mintea noile tehnologii [Digitale Demenz. Wie wir uns und unsere Kinder um den Verstand bringen]

Roberta Răducu

Every technological advancement that facilitates communication and the spread of information (motion pictures, radio, television, computers, smartphones and Internet) has been greeted by the public as the new way to improve diverse fields, including the educational system. Manfred Spitzer, neurosciences expert, specialized on studying the learning processes points out in the book Digital Dementia that a fashionable information and communication technological discovery is not necessarily compatible with educating the minds of the youngest.

Communication. Mass media

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