Game design research: an introduction to theory & practice

Design research is an active academic field covering disciplines such as architecture, graphic, product, service, interaction, and systems design. Design research aims to understand not only the designed end products but also how design as an activity unfolds. The book demonstrates different approaches to design research in game design research

Elastic energy loss with respect to the reaction plane in a Monte-Carlo model

We present a computation of $\pi^0$ nuclear modification factor with respect to the reaction plane in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV, based on a Monte-Carlo model of elastic energy loss of hard partons traversing the bulk hydrodynamical medium created in ultrarelativistic heavy-ion collisions. We find the incoherent nature of elastic energy loss incompatible with the measured data.Comment: 5 pages, 2 figure

Energy loss in a fluctuating hydrodynamical background

Recently it has become apparent that event-by-event fluctuations in the initial state of hydrodynamical modelling of ultrarelativistic heavy-ion collisions are crucial in order to understand the full centrality dependence of the elliptic flow coefficient v_2. In particular, in central collisions the density fluctuations play a major role in generating the spatial eccentricity in the initial state. This raises the question to what degree high P_T physics, in particular leading-parton energy loss, which takes place in the background of an evolving medium, is sensitive to the presence of the event-by-event density fluctuations in the background. In this work, we report results for the effects of fluctuations on the nuclear modification factor R_AA in both central and noncentral sqrt(s_NN) = 200 GeV Au+Au collisions at RHIC. Two different types of energy-loss models, a radiative and an elastic, are considered. In particular, we study the dependence of the results on the assumed spatial size of the density fluctuations, and discuss the angular modulation of R_AA with respect to the event plane.Comment: 9 pages, 9 figure

Heikkotuottoisten ojitettujen soiden puustoinventointi Maanmittauslaitoksen laserkeilausaineistoa hyödyntäen

TutkimusselosteSeloste artikkelista: Niemi, M., Vastaranta, M., Peuhkurinen, J. & Holopainen, M. 2015. Forest inventory attribute prediction using airborne laser scanning in low-productive forestry-drained boreal peatlands. Silva Fennica 49(2), article id 121

Utilizing Sentinel-1A Radar Images for Large-Area Land Cover Mapping with Machine-learning Methods

Special Issue on the 39th Canadian Symposium on Remote Sensing (CSRS 2018)Land use and land cover maps are vital sources of information for many applications. Recently, using high-resolution and open-access satellite images has become a preferred method for mapping land cover, especially over large areas. This study was designed to map the land cover and agricultural fields of a large area using Sentinel-1A synthetic aperture radar (SAR) images. Seven machine-learning methods were employed for image analyses. The Random Forest classifier algorithm outperformed the other machine-learning methods in the training step; thus, we selected it for further use and tuned its parameters. After several image processing steps, we classified the final image into 23 land cover classes and achieved an overall accuracy of 42% for all classes, and 57% for agricultural fields. This research note highlights some characteristics and advantages of using Sentinel-1A images and provides novel methods for nation-wide large-area mapping applications.Peer reviewe

Sites of Play: Locating Gameplace in Red Dead Redemption 2

In Video Game Spaces (2009), Michael Nitsche proposes three indicators of ‘placeness’ in video games: identity, self-motivated and self-organised action, and traces of memory (191-201). We read this notion of placeness as closely aligned to, or overlapping with, the understandings of place and site articulated in theatre and performance research as site-specific performance. Here, we articulate the ideas (and analyse the experiences) of placeness and sitedness in Rockstar Games’ Red Dead Redemption 2 (RDR2) through an analytical conversation between performance studies and games design research with a human-computer interaction bias. Through a close-reading of gameplay experiences (Bizzocchi and Tanenbaum, 2011), we individually experienced over 30 hours of RDR2 gameplay while taking notes, recording, and capturing screenshots. During our individual analyses, we met periodically to compare notes, discuss notable game moments and share analytical insights. At this intersection of game research and performance research, we ask to what extent the theoretical articulations of aesthetic/affective experience in physical, corporeal and material spaces can develop – and further nuance – our understanding of how place is experienced (and thus designed) in contemporary videogames. In doing so, we propose the term gameplace as a means of articulating what this article will define as the affective relationship between place, experience and play

Systematics of parton-medium interaction from RHIC to LHC

Despite a wealth of experimental data for high-P_T processes in heavy-ion collisions, discriminating between different models of hard parton-medium interactions has been difficult. A key reason is that the pQCD parton spectrum at RHIC is falling so steeply that distinguishing even a moderate shift in parton energy from complete parton absorption is essentially impossible. In essence, energy loss models are effectively only probed in the vicinity of zero energy loss and, as a result, at RHIC energies only the pathlength dependence of energy loss offers some discriminating power. At LHC however, this is no longer the case: Due to the much flatter shape of the parton p_T spectra originating from 2.76 AGeV collisions, the available data probe much deeper into the model dynamics. A simultaneous fit of the nuclear suppression at both RHIC and LHC energies thus has great potential for discriminating between various models that yield equally good descriptions of RHIC data alone.Comment: Talk given at Quark Matter 2011, 22-28 May 2011, Annecy, Franc

Kotimaiset kustantajat ja rinnakkaistallennus

Kesällä toteutetun kyselyn mukaan noin puolet suomalaisista tiedejulkaisuista sallii julkaistujen artikkeleiden rinnakkaistallennuksen avoimesti saatavilla oleviin julkaisuarkistoihin. Melko suuri osa kustantajista ei kuitenkaan ole vielä ilmoittanut kantaansa rinnakkaistallentamiseen. Tämä katsaus perustuu kesällä 2013 avoimella verkkokyselyllä saatuihin tietoihin. Kyseessä ei ollut tutkimus, vaan tiedonkeruu SHERPA/RoMEO-palvelua varten.Non peer reviewe