Understanding the relative contribution of technical and tactical performance to match outcome in Australian Football

ABSTRACT

The aim of this study was to assess if tactical and technical performance indicators (PIs) could be used in combination to model match outcomes in Australian Football (AF). A database of 101 technical PIs and 14 tactical PIs from every match in the 2009–2016 Australian Football League (AFL) seasons was merged. Two outcome measures Win-loss and Score margin were used as dependent variables. The top 45 ranked technical and tactical PIs from a feature selection process were used to model match outcome using decision tree and Generalised Linear Models (GLMs). Of the top 45 selected features, this included seven tactical PIs. The Win-loss-based Decision tree model achieved a classification accuracy of 89.0% and GLM 93.2%. A Score margin-based GLM achieved a root mean squared error (RMSE) of 6.9 points. A combined approach to the classification of match outcomes provided no improvement in model accuracy compared with previous literature. However, this study has established the relative importance of technical and tactical measures of performance in relation to successful team performance in AF.     

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Trade-Offs, Biases, and Uncertainty in Project Planning and Execution: A Problem-Based Simulation Exercise

The ability to plan and execute projects is a fundamental skill required among managers and business school graduates. In the opening phase of a project, the project team makes decisions about the relative priority of project time, cost, and performance objectives, oftentimes without complete information about customer and stakeholder requirements. Existing project management curriculum assists in developing skills to decide among these priorities in the abstract through paradigms such as the time–cost–performance triangle, with limited attention to the improvement of skills required to develop solutions to these trade-offs, particularly in uncertain and ambiguous project environments. Further, there is often an underlying bias in project teams toward consideration of the project task and project deliverables and reduced attention to time and cost objectives. This study demonstrates the benefits of a balanced approach to setting project time, cost, and performance objectives using a goal-based simulation exercise entitled "The Bridge to Project Leadership." Results for 124 project teams illustrate the tendency to ignore this balanced approach, resulting in reduced project performance, even among experienced project managers.     

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Fibonacci序列{F_(kn r)}模F_n~2的同余式

利用Fibonacci序列的定义及基本性质得到了Fibonacci序列{F_(kn)}模F_n~2的同余式和序列{F_(kn r)}的递归关系,然后归纳得出了{F_(kn r)}模F_n~2的同余式的一般情况,并证明了其正确性.     

一种基于.NET的投标决策支持系统解决方案

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国内A股上市公司经营业绩的评价和改进建议——基于板块的DEA分析

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