Extended Memory: Early Calculating Engines and Historical Computer Simulations

Leonardo ◽  
2006 ◽  
Vol 39 (3) ◽  
pp. 237-243 ◽  
Author(s):  
David Mather

When framed within cognitive theory's extended mind hypothesis, Charles Babbage's 19th-century calculating machines illustrate a distinction between accuracy and flexibility. These properties affect how historical data and memory are organized, providing conceptual linkages for mind-machine integration. The distinction between accuracy and flexibility is also apparent in present-day computer simulations that use historical scenarios, such as virtual-reality software designed for the Bloody Sunday Inquiry, history-based video games and other art and entertainment software applications. These contemporary examples share one important feature of extended mind: the incorporation of history or personal memory into a shared memory system.

Author(s):  
Jonathan Weinel

This chapter explores altered states of consciousness in interactive video games and virtual reality applications. First, a brief overview of advances in the sound and graphics of video games is provided, which has led to ever-more immersive capabilities within the medium. Following this, a variety of games that represent states of intoxication, drug use, and hallucinations are discussed, in order to reveal how these states are portrayed with the aid of sound and music, and for what purpose. An alternative trajectory in games is also explored, as various synaesthetic titles are reviewed, which provide high-adrenaline experiences for ravers, and simulate dreams, meditation, or psychedelic states. Through the analysis of these, and building upon the previous chapters of Inner Sound, this chapter presents a conceptual model for ‘Altered States of Consciousness Simulations’: interactive audio-visual systems that represent altered states with regards to the sensory components of the experience.


This is a comprehensive, illustrated catalogue of the 200+ marine chronometers in the collections of Royal Museums Greenwich. Every chronometer has been completely dismantled, studied and recorded, and illustrations include especially commissioned line drawings as well as photographs. The collection is also used to illustrate a newly researched and up-to-date chapter describing the history of the marine chronometer, so the book is much more than simply a catalogue. The history chapter naturally includes the story of John Harrison’s pioneering work in creating the first practical marine timekeepers, all four of which are included in the catalogue, newly photographed and described in minute detail for the first time. In fact full technical and historical data are provided for all of the marine chronometers in the collection, to an extent never before attempted, including biographical details of every maker represented. A chapter describes how the 19th century English chronometer was manufactured, and another provides comprehensive and logically arranged information on how to assess and date a given marine chronometer, something collectors and dealers find particularly difficult. For further help in identification of chronometers, appendices include a pictorial record of the number punches used by specific makers to number their movements, and the maker’s punches used by the rough movement makers. There is also a close-up pictorial guide to the various compensation balances used in chronometers in the collection, a technical Glossary of terms used in the catalogue text and a concordance of the various inventory numbers used in the collection over the years.


Author(s):  
Christopher J. Ferguson ◽  
Anastasiia Gryshyna ◽  
Jung Soo Kim ◽  
Emma Knowles ◽  
Zainab Nadeem ◽  
...  
Keyword(s):  

Author(s):  
VINCENT ROBERGE ◽  
MOHAMMED TARBOUCHI ◽  
FRANÇOIS ALLAIRE

In this paper, we present a parallel hybrid metaheuristic that combines the strengths of the particle swarm optimization (PSO) and the genetic algorithm (GA) to produce an improved path-planner algorithm for fixed wing unmanned aerial vehicles (UAVs). The proposed solution uses a multi-objective cost function we developed and generates in real-time feasible and quasi-optimal trajectories in complex 3D environments. Our parallel hybrid algorithm simulates multiple GA populations and PSO swarms in parallel while allowing migration of solutions. This collaboration between the GA and the PSO leads to an algorithm that exhibits the strengths of both optimization methods and produces superior solutions. Moreover, by using the "single-program, multiple-data" parallel programming paradigm, we maximize the use of today's multicore CPU and significantly reduce the execution time of the parallel program compared to a sequential implementation. We observed a quasi-linear speedup of 10.7 times faster on a 12-core shared memory system resulting in an execution time of 5 s which allows in-flight planning. Finally, we show with statistical significance that our parallel hybrid algorithm produces superior trajectories to the parallel GA or the parallel PSO we previously developed.


2021 ◽  
Vol 13 ◽  
pp. 197-212
Author(s):  
Hanna Kuliga

The presented article covers the subject of creating one’s identity in a virtual reality of video games, in the perspective of LGBT characters and their influence on the exploration of the sexual identity of a gamer. It describes the means by which the user has the ability to experiment with and express their identity, putting an emphasis on the role of immersion and cultural reflection in this process. The fol-lowing presented issues concern the representation of sexual minorities and negative phenomena that are present in the virtual space (such as queerbaiting), which have an impact on both the user, as well as the game industry. It emphasizes the role of the appearance of LGBT characters in this medium, which potentially can positively influence the player and producer communities. In this article I also describe three examples of non-heteronormative characters and their importance to users and developers of the given games.


Sign in / Sign up

Export Citation Format

Share Document