ABSTRACT"Player modeling" is a loose concept. It can equally apply to everything from a predictive model of player actions resulting from machine learning to a designer's description of a player's expected reactions in response to some piece of game content. This lack of a precise terminology prevents practitioners from quickly finding introductions to applicable modeling methods or determining viable alternatives to their own techniques. We introduce a vocabulary that distinguishes between the major existing player modeling applications and techniques. Four facets together define the kind for a model: the scope of application, the purpose of use, the domain of modeled details, and the source of a model's derivation or motivation. This vocabulary allows the identification of relevant player modeling methods for particular problems and clarifies the roles that a player model can take.
The autocatalytic deposition of gold has been investigated in a novel, nonalkaline, noncyanide electroless gold plating bath. The bath consists of sodium L-ascorbic acid as the reducing agent and sodium gold (I) thiosulfate as the gold complex. Ascorbic acid autocatalytically reduces gold thiosulfate at deposition rates of approximately 1 ~m/h. The reaction sequence includes various side reactions responsible for consuming reactants and lowering the deposition rate. The rate of the electroless gold thiosulfate reduction is sensitive to the reactant concentration as well as the concentration of thiosulfate. The accumulation of thiosulfate and the depletion of the reactants explain the decreasing deposition rate with time. Periodic addition of hydrogen peroxide consumes the excess thiosuliate and increases the deposition rate and longevity of the bath.
Hand held long exposures often result in blurred photographs due to camera shake. Long exposures are desirable both for artistic effect and in low-light situations. We propose a novel method for digitally reducing imaging artifacts, which does not require additional hardware such as tripods or optical image stabilization lenses. A series of photographs is acquired with short shutter times, stabilized using image alignment, and then composited. Our method is capable of reducing noise and blurring due to camera shake, while simultaneously preserving the desirable effects of motion blur. The resulting images are very similar to those obtained using a tripod and a true extended exposure.
1Equal employment opportunity policies were introduced in Australia from the 1980s in response to women's disadvantaged workforce position. Australia's unique form of affirmative action was underpinned by legislation and aimed to promote gender equity in the workplace via employer action. Throughout the 1990s there has been a policy shift away from collectivism towards individualism and away from externally driven and directed social programs at the workplace towards managerialist driven social programs. The main process for implementing progressive and inclusive equity programs at the workplace is through human resource management policies that link employment diversity to organisational objectives (for example, productivity and profitability). Programs titled Managing Diversity have been introduced into some organisations and today there are a variety of approaches towards equity policies in Australian organisations. This paper examines the principles behind affirmative action and the various interpretations of managing diversity and discusses the impact of these new policies. The paper proposes that a distinctive Australian version of managing diversity will develop in some organisations based on the legislative framework that has existed for nearly twenty years.
The electrochemical reduction of gold thiosulfate has been studied and compared to the reduction of gold cyanide. Gold thiosulfate is a potential replacement for gold cyanide in electro and electroless plating baths. Gold thiosulfate has a more positive reduction potential than gold cyanide and eliminates the use of cyanide. The standard heterogeneous rate constant, transfer coefficient, and diffusion coefficient for gold thiosulfate reduction were found to be 1.58 >< 1O cm/s, 0.23 and 7 x 10 cm2/s, respectively. The effect of sulfite as an additive to gold thiosulfate solutions was examined.
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