Machine learning applied to the context of Poker

A combinação de princípios da teoria de jogo e metodologias de machine learning aplicados ao contexto de formular estratégias ótimas para jogos está a angariar interesse por parte de uma porção crescentemente significativa da comunidade científica, tornando-se o jogo do Poker num candidato de estudo popular devido à sua natureza de informação imperfeita. Avanços nesta área possuem vastas aplicações em cenários do mundo real, e a área de investigação de inteligência artificial demonstra que o interesse relativo a este objeto de estudo está longe de desaparecer, com investigadores do Facebook e Carnegie Mellon a apresentar, em 2019, o primeiro agente de jogo autónomo de Poker provado como ganhador num cenário com múltiplos jogadores, uma conquista relativamente à anterior especificação do estado da arte, que fora desenvolvida para jogos de apenas 2 jogadores. Este estudo pretende explorar as características de jogos estocásticos de informação imperfeita, recolhendo informação acerca dos avanços nas metodologias disponibilizados por parte de investigadores de forma a desenvolver um agente autónomo de jogo que se pretende inserir na classificação de "utility-maximizing decision-maker".The combination of game theory principles and machine learning methodologies applied to encountering optimal strategies for games is garnering interest from an increasing large portion of the scientific community, with the game of Poker being a popular study subject due to its imperfect information nature. Advancements in this area have a wide array of applications in real-world scenarios, and the field of artificial intelligent studies show that the interest regarding this object of study is yet to fade, with researchers from Facebook and Carnegie Mellon presenting, in 2019, the world’s first autonomous Poker playing agent that is proven to be profitable while confronting multiple players at a time, an achievement in relation to the previous state of the art specification, which was developed for two player games only. This study intends to explore the characteristics of stochastic games of imperfect information, gathering information regarding the advancements in methodologies made available by researchers in order to ultimately develop an autonomous agent intended to adhere to the classification of a utility-maximizing decision-maker

Solid rocket motor internal insulation

Internal insulation in a solid rocket motor is defined as a layer of heat barrier material placed between the internal surface of the case propellant. The primary purpose is to prevent the case from reaching temperatures that endanger its structural integrity. Secondary functions of the insulation are listed and guidelines for avoiding critical problems in the development of internal insulation for rocket motors are presented

Cash Box, September 12, 1964

The international music record weeklyPublication ceased with Nov. 199

Tempest: Geometries of Play

Atari’s 1981 arcade hit Tempest was a “tube shooter” built around glowing, vector-based geometric shapes. Among its many important contributions to both game and cultural history, Tempest was one of the first commercial titles to allow players to choose the game’s initial play difficulty (a system Atari dubbed “SkillStep”), a feature that has since became standard for games of all types. Tempest was also one of the most aesthetically impactful games of the twentieth century, lending its crisp, vector aesthetic to many subsequent movies, television shows, and video games. In this book, Ruggill and McAllister enumerate and analyze Tempest’s landmark qualities, exploring the game’s aesthetics, development context, and connections to and impact on video game history and culture. By describing the game in technical, historical, and ludic detail, they unpack the game’s latent and manifest audio-visual iconography and the ideological meanings this iconography evokes

Central Florida Future, Vol. 37 No. 21, October 25, 2004

You [don\u27t] get what you pay for: Board of Governors approves block tuition for state schools; Stickers suffer sneaky switch: Bitter partisanship of election leads to petty vandalism and replacement of bumper stickers; User unfriendly: MyUCF portal frustrates most who try to log on; Former senator decries \u27the most corrupt meeting I\u27ve ever seen\u27: Brand new Senate off to a rocky start; leadership in doubt.https://stars.library.ucf.edu/centralfloridafuture/2785/thumbnail.jp

Out of reach out of touch? The impact of flexible work arrangement use on collaboration within teams

Organisations are faced with a growing interest in flexible work arrangements that enable employees to control where, when and for how long they work and need to find ways to adapt and integrate these practices into work routines and processes. Because these arrangements reduce employees’ facetime at the office, doubts remain regarding their impact on collaboration within teams. In this thesis I explore the impact of the use of part-time work, telework and flexible working hours on collaboration within teams and the contextual features that explain this relationship. Seven case studies were conducted in software development teams in three organisations in The Netherlands and Belgium. Findings suggest that telework, part-time work and flexible working hours impact on collaboration within teams because of reduced passive facetime – passive presence of team members at the office without necessarily engaging in interactions with each other. Passive facetime was interpreted as availability to others and an enabler to collaboration. A theoretical framework is put forth outlining six sets of contextual features that impact on this relationship. At the team-level, these included skill differentiation, task characteristics (task complexity and goal clarity), temporal characteristics (temporal stability and task urgency) and structural characteristics (regular face-to-face meetings, amount of absence, predictability of absence and synchronisation of presence). At the individual level, proactive behaviours were found to have an impact. Finally, the whole framework is nested in and dependent on environmental characteristics, in particular the organisational setting. This thesis contributes to theory by outlining the double-faceted role of passive facetime in the relationship between FWA use and collaboration, by delineating how structural characteristics can provide teams with sufficient passive facetime, and by presenting a framework explaining the influence of FWA use on collaboration and the features that explain how and when this happens

Alfvén waves underlying ionospheric destabilization: ground-based observations

During geomagnetic storms, terawatts of power in the million mile-per-hour solar wind pierce the Earth’s magnetosphere. Geomagnetic storms and substorms create transverse magnetic waves known as Alfvén waves. In the auroral acceleration region, Alfvén waves accelerate electrons up to one-tenth the speed of light via wave-particle interactions. These inertial Alfvén wave (IAW) accelerated electrons are imbued with sub-100 meter structure perpendicular to geomagnetic field B. The IAW electric field parallel to B accelerates electrons up to about 10 keV along B. The IAW dispersion relation quantifies the precipitating electron striation observed with high-speed cameras as spatiotemporally dynamic fine structured aurora. A network of tightly synchronized tomographic auroral observatories using model based iterative reconstruction (MBIR) techniques were developed in this dissertation. The TRANSCAR electron penetration model creates a basis set of monoenergetic electron beam eigenprofiles of auroral volume emission rate for the given location and ionospheric conditions. Each eigenprofile consists of nearly 200 broadband line spectra modulated by atmospheric attenuation, bandstop filter and imager quantum efficiency. The L-BFGS-B minimization routine combined with sub-pixel registered electron multiplying CCD video stream at order 10 ms cadence yields estimates of electron differential number flux at the top of the ionosphere. Our automatic data curation algorithm reduces one terabyte/camera/day into accurate MBIR-processed estimates of IAW-driven electron precipitation microstructure. This computer vision structured auroral discrimination algorithm was developed using a multiscale dual-camera system observing a 175 km and 14 km swath of sky simultaneously. This collective behavior algorithm exploits the “swarm” behavior of aurora, detectable even as video SNR approaches zero. A modified version of the algorithm is applied to topside ionospheric radar at Mars and broadcast FM passive radar. The fusion of data from coherent radar backscatter and optical data at order 10 ms cadence confirms and further quantifies the relation of strong Langmuir turbulence and streaming plasma upflows in the ionosphere with the finest spatiotemporal auroral dynamics associated with IAW acceleration. The software programs developed in this dissertation solve the century-old problem of automatically discriminating finely structured aurora from other forms and pushes the observational wave-particle science frontiers forward