A game-theoretic resource allocation approach for intercell device-to-device communications in cellular networks

Device-to-Device (D2D) communication is a recently emerged disruptive technology for enhancing the performance of current cellular systems. To successfully implement D2D communications underlaying cellular networks, resource allocation to D2D links is a critical issue, which is far from trivial due to the mutual interference between D2D users and cellular users. Most of the existing resource allocation research for D2D communications has primarily focused on the intracell scenario while leaving the intercell settings not considered. In this paper, we investigate the resource allocation issue for intercell scenarios where a D2D link is located in the overlapping area of two neighboring cells. Specifically, We present three intercell D2D scenarios regarding the resource allocation problem. To address the problem, we develop a repeated game model under these scenarios. Distinct from existing works, we characterize the communication infrastructure, namely Base Stations (BSs), as players competing resource allocation quota from D2D demand, and we define the utility of each player as the payoff from both cellular and D2D communications using radio resources. We also propose a resource allocation algorithm and protocol based on the Nash equilibrium derivations. Numerical results indicate that the developed model not only significantly enhances the system performance including sum rate and sum rate gain, but also sheds lights on resource configurations for intercell D2D scenarios.

Game Sense as a model for delivering quality teaching in physical education

As a well-developed indicator of high-quality teaching in any subject area we use the New South Wales (NSW) Quality Teaching Framework (QTF) in this article to identify what might constitute quality teaching in physical education and to suggest the extent to which Game Sense pedagogy can be seen to meet the expectations of the NSW QTF. We identify and discuss the pedagogical features of Game Sense that our examination suggests can provide quality teaching and learning to make suggestions about how this could inform the provision of high-quality teaching across the practical curriculum.

The sport spectator satisfaction model : A conceputal framework for understanding the satisfaction of spectators

Customer satisfaction is associated with numerous positive business outcomes and is recognised as an important field of study. However, only limited research has addressed the satisfaction of sport spectators, with even fewer studies examining the determinants of this satisfaction. Yet an understanding of how spectators arrive at evaluations of satisfaction or dissatisfaction provides a useful insight for directing marketing and operational efforts. The Sport Spectator Satisfaction Model (SSSM) is an extension of the Disconfirmation of Expectations Model (DEM) accommodating unique aspects of the sport product, as well as accommodating the core and peripheral dimensions of the spectator service. The SSSM depicts club identification and the win/lose phenomenon as considerable influences on the satisfaction spectators derive from the game and its peripheral services. The SSSM integrates marketing theory, social identity theory and sport marketing theory to broaden our understanding of spectator satisfaction and provide a platform for further research.

Correct weight? analysing Australian football through a derivative global or cultural cringe model

The application of a 'global' model, in practice usually British or American, and generalised sociological concepts to a particular sport and its social and cultural context is not always appropriate. In Australian academia, the custom is particularly appealing, due to the Australian colonial 'cultural cringe', the pattern of automatic deference to overseas (termed 'international') knowledge. This article argues that 'Fresh Prince of Coloma! Dome: Indigenous Logic in the AFL' (Football Studies, 8(1), 2005) inappropriately applies American sociological, and American football, logic to the indigenous Australian game Australian football, which differs in character both as a game and in its social, cultural and political context. The three researchers do not take account of the factors of height and weight in Australian football, and the average size of Aboriginal players, and of the relationship between speed and strength in the game as strategies and tactics change. Both omissions constitute fundamental flaws. American football and sports sociology's ideas of 'central position theory', with a suggestion of underlying racism, is of limited relevance to Australian football. It is also possible that the American sitcom, Fresh Prince of Bel Air, was neither a helpful muse nor a suitable metaphor for research into this subj ect. In Australian football, a game in which few 'central positions' are crucial and in which 'leadership positions' can be found in many parts of the ground, including the half-back flank and the wing, neither size nor position are the only major determinants of significance in the team.

Game-centred models and teaching in culturally diverse settings

This presentation draws on the observations and experiences that we, as teacher educators, have had using Teaching Games for Understanding (TGfU) as a pedagogical tool with generalist pre-service teachers in two different sites: Malaysia and Australia. TGfU is a game-centred pedagogy in which students learn the „Why‟ of game playing before the „How‟ of the skills associated with the game. This concept is based on a student-centred approach to learning. The benefit of this pedagogy to generalist teachers is the notion that they are not required to be a master of many sports. This narrative relates the observations and experiences of teacher educators of Malaysian and Australian generalist pre-service teachers confronted with teaching and learning TGfU for the first time in their culturally specific contexts. The two key issues arising from teaching the TGfU model were: the disparity in the cohorts‟ experiences arising from institutionalised conceptions by the pre-service teachers of what and how learning occurs in physical education; and the pre-service teachers‟ difficulty with implementing the TGfU model in a practical situation. Crossing the cultural divide for the Malaysian and Australian pre-service teachers required them to explore more fully the range of approaches to teaching and to recognise a more student-centred approach as a valid and authentic tool. As both teachers and observers of this process, our intention was to examine the two cohorts‟ learning and subsequent teaching with the aim of developing better understandings of the challenges when teaching TGfU in tertiary settings.

Endogenous transportation technology in a cournot differential game with intraindustry trade

We investigate a dynamic Cournot duopoly with intraindustry trade, where firms invest in R&D to reduce the level of iceberg transportation costs. We adopt both open-loop and closed-loop equilibrium concepts, showing that a unique (saddle point) steady state exists in both cases. In the open-loop model, optimal investments and the resulting efficiency of transportation technology are independent of the relative size of the two countries. On the contrary, in the closed-loop case firms’ R&D incentives are driven by the relative size of the two countries. Policy implications are also evaluated.

More than a game: evaluation report

‘More than a Game’ is a sport-based youth mentoring program developed and implemented by Western Bulldogs in partnership with Newport Islamic Society (NIS), the Australian Federal Police, Victoria Police and Hobsons Bay City Council, with funding from the Attorney General’s Department Building Community Resilience (BCR) grant scheme. The program aimed to develop a community-based resilience model that would use team-based sports to address issues of identity, sense of belonging and cultural isolation amongst young men of Islamic faith, all of which are identified as factors that may promote forms of violent extremism. The program involved 60 young men, aged 15-25, from the Newport Islamic Society in Melbourne’s Western suburbs. The boys were engaged in numerous activities where they were mentored by staff from Western Bulldogs, Victoria Police and Australian Federal Police, who worked in conjunction with community leaders from the Newport Islamic Society.

Through sports-based training, mentoring programs, and community dialogue, ‘More Than a Game’ aimed to develop participants’ leadership, communication, and cross-cultural engagement skills; to identify and facilitate the development of young role models in the community; to enhance greater understanding of the Muslim community in Melbourne’s West, and to foster greater intercultural contact and understanding between participants and other cultural groups. A number of activities were developed and implemented as a part of the program

Establishing Competitive Domination Cycles for Peer-to-peer Game Combat

Games require balance to be fair and enjoyable. In two player combat settings balance can be achieved by ensuring that both units are equally capable. The possibility of alliances changes the nature of balance when additional players are introduced. One approach to achieving balance is to use a domination loop between agents in a rock, scissors, paper style approach. This paper investigates whether such loops exist within the existing rules of game combat. Search processes within the attribute space of the game units are used to identify loops within an existing game architecture. A dominance metric is used to identify cycles where the victory is achieved by a clear threshold. Cycles with up to 5 players are demonstrated, although larger cycles require more effort to find. Use of models of game play and attribute space search are recommended as a mechanism for balancing games of this format.

Modelling attribute dependencies in single unit game combat settings

The relative strengths of individual units, described as attributes, determine the outcome during unit conflicts involving units in the armies of opponents in large strategy games. We describe a process for developing predictive models of the outcome for such conflicts where combat involves single unit adversaries where each unit is defined in terms of 4 fundamental attributes. These attributes: range, speed, health and damage are common to unit descriptions in many successful real-time strategy games. Our analysis process identifies three phases of game play with invariant properties that hold throughout each phase. We demonstrate the utility of this analysis by creating a model that predicts game outcomes. Predictions are validated against the game simulation. The game outcomes are explicitly related to the attributes of the two units involved, highlighting the significance and role of each attribute.

Generative experimentation and social simulation : exploring gaming for model vVerification and validation

The agent-based modelling paradigm has been actively applied to address social normative issues such as values, cognition, morality and behaviours. The abstraction of human and human-like social processes and mechanisms result in misalignment of computational model with existing verification and validation techniques and expose significant challenges. We argue that human sources represent a sound approach for verification and validation of agent-based social simulation models. We propose a novel conceptual gaming framework that extracts required information from relevant sources as part of game play

More than a game : the impact of sport-based youth mentoring schemes on developing resilience toward violent extremism

This paper draws upon the findings of an evaluation of “More than a Game”, a sport-focused youth mentoring program in Melbourne, Australia that aimed to develop a community-based resilience model using team-based sports to address issues of identity, belonging, and cultural isolation amongst young Muslim men in order to counter forms of violent ex-tremism. In this essay we focus specifically on whether the intense embodied encounters and emotions experienced in team sports can help break down barriers of cultural and religious difference between young people and facilitate ex-periences of resilience, mutual respect, trust, social inclusion and belonging. Whilst the project findings are directly rel-evant to the domain of countering violent extremism, they also contribute to a growing body of literature which con-siders the relationship between team-based sport, cross-cultural engagement and the development of social resilience, inclusion and belonging in other domains of youth engagement and community-building.

An analytical model for optimal spectrum leasing under constraints of quality of service in CRNs

Cognitive radio improves spectrum efficiency and mitigates spectrum scarcity by allowing cognitive users to opportunistically access idle chunks of the spectrum owned by licensed users. In long-term spectrum leasing markets, secondary network operators make a decision about how much spectrum is optimal to fulfill their users' data transmission requirements. We study this optimization problem in multiple channel scenarios. Under the constrains of expected user admission rate and quality of service, we model the secondary network into a dynamic data transportation system. In this system, the spectrum accesses of both primary users and secondary users are in accordance with stochastic processes, respectively. The main metrics of quality of service we are concerned with include user admission rate, average transmission delay and stability of the delay. To quantify the relationship between spectrum provisioning and quality of service, we propose an approximate analytical model. We use the model to estimate the lower and upper bounds of the optimal amount of the spectrum. The distance between the bounds is relatively narrow. In addition, we design a simple algorithm to compute the optimum by using the bounds. We conduct numerical simulations on a slotted multiple channel dynamic spectrum access network model. Simulation results demonstrate the preciseness of the proposed model. Our work sheds light on the design of game and auction based dynamic spectrum sharing mechanisms in cognitive radio networks.

Does playing a sports active video game improve young children's ball skill competence?

OBJECTIVES: Actual and perceived object control (commonly ball) skill proficiency is associated with higher physical activity in children and adolescents. Active video games (AVGs) encourage whole body movement to control/play the electronic gaming system and therefore provide an opportunity for screen time to become more active. The purpose of this study was to determine whether playing sports AVGs has a positive influence on young children's actual and perceived object control skills. DESIGN: Two group pre/post experimental design study. METHODS: Thirty-six children aged 6-10 years old from one school were randomly allocated to a control or intervention condition. The Test of Gross Motor Development-3 assessed object control skill. The Pictorial Scale of Perceived Competence for Young Children assessed perceived object control skill. The intervention consisted of 6×50min lunchtime AVG sessions on the Xbox Kinect. Two to three sport games were chosen for participants to play each session. General linear models with either perceived object control or actual object control skill as the outcome variables were conducted. Each base model adjusted for intervention status and pre-score of the respective outcome variable. Additional models adjusted for potential confounding variables (sex of child and game at home). RESULTS: No significant differences between the control and intervention groups were observed for both outcomes. CONCLUSIONS: This study found that playing the Xbox Kinect does not significantly influence children's perceived or actual object control skills, suggesting that the utility of the Xbox Kinect for developing perceived and actual object control skill competence is questionable.

GTES: An optimized game-theoretic demand-side management scheme for smart grid

Demand-side management in smart grids has emerged as a hot topic for optimizing energy consumption. In conventional research works, energy consumption is optimized from the perspective of either the users or the power company. In this paper, we investigate how energy consumption may be optimized by taking into consideration the interaction between both parties. We propose a new energy price model as a function of total energy consumption. Also, we propose a new objective function, which optimizes the difference between the value and cost of energy. The power supplier pulls consumers in a round-robin fashion and provides them with energy price parameter and current consumption summary vector. Each user then optimizes his own schedule and reports it to the supplier, which, in turn, updates its energy price parameter before pulling the next consumers. This interaction between the power company and its consumers is modeled through a two-step centralized game, based on which we propose our game-theoretic energy schedule (GTES) method. The objective of our GTES method is to reduce the peak-to-average power ratio by optimizing the users' energy schedules. The performance of the GTES approach is evaluated through computer-based simulations. © 2014 IEEE.