Automatic grain texture analysis using integral transforms

Tonewood for musical instruments is quarter-sawn and frequently quality-graded based on visual appearance, mechanical and acoustic properties. The assessment uses simple human (subjective) observation, and two ‘‘experts’’ can rate the same sample differently. This paper describes the application of integral transforms (Fourier and Radon) for automatic (objective) assessment of the visual appearance of 10 Sitka spruce (Picea sitchensis) sample images. This work considers surface classification on the basis of grain orientation, count, spacing, and evenness or uniformity.

An adjustable force field for multiple robot mission and path planning

Mission and path planning for multiple robots in dynamic environments is required when multiple mobile robots or unmanned vehicles are used for geographically distributed tasks. Assigning tasks and paths for robots for cooperatively accomplishing a mission of reaching to number of target points are addressed in this paper. The methodology that is proposed is based on using an adjustable force field which is suitable for dynamic environment. From the force field analysis, the decisions to assign tasks for each robot are then made. The force field is also used to plan a collision free path for each robot. Adjustable weights for the force field model are proposed to satisfy the constraints of the motion. In this research, the constraints are the cooperation of the robots, the precedence between the targets and between robots, and the discrimination between different obstacles. Two simulations for mission and path planning in 2D and 3D dynamic spaces with multiple robots are presented based on the proposed adjustable force filed. The result of the mission and path planning for three robots cooperatively doing eight target points are shown.

Integral approach and numerical improvement to calculate carbon concentration profiles in carburising

The carbon diffusion in steel, where the carbon diffusivity varies with the carbon content, was solved with the integral methods under the third boundary condition. The variation of carbon diffusivity in steel with the carbon content was described with two different functions, linear dependence and exponential dependence. The integral approximation for both cases was improved with the numerical computation to more accurately predict the carbon profiles. The integral solution is more accurate than the formulation based on the assumption of a constant diffusivity or those based on the assumption of a constant diffusivity and/or constant carbon content at part surface. It is also more easily used in practice than the numerical method to describe the carburising process and predict the carbon content at steel surface and carbon profiles in treated layer.

The integral child

.

A fuzzy decision support method for customer preferences analysis based on Choquet integral

The explosion of the Web 2:0 platforms, with massive volume of user generated data, has presented many new opportunities as well as challenges for organizations in understanding consumer's behavior to support for business planning process. Feature based sentiment mining has been an emerging area in providing tools for automated opinion discovery and summarization to help business managers with achieving such goals. However, the current feature based sentiment mining systems were only able to provide some forms of sentiments summary with respect to product features, but impossible to provide insight into the decision making process of consumers. In this paper, we will present a relatively new decision support method based on Choquet Integral aggregation function, Shapley value and Interaction Index which is able to address such requirements of business managers. Using a study case of Hotel industry, we will demonstrate how this technique can be applied to effectively model the user's preference of (hotel) features. The presented method has potential to extend the practical capability of sentiment mining area, while, research findings and analysis are useful in helping business managers to define new target customers and to plan more effective marketing strategies.

Mission fulfilment : the role of the non-profit arts board

This research explores the complexity of establishing mission fulfilment through the performance of non-profit arts boards (NP AB). Since the early 1990s, the non-profit literature has only sporadically focussed on the concept of how board performance contributes to mission fulfilment in the broader non-profit sector. Consequently, in both the empirical and normative literatures there is a dearth of understanding of how the nonprofit arts board performance fulfils the organisation's mission. The lack of exploration is problematic for theory development in contextualising non-profit arts board performance contribution to mission fulfilment. Although research has been undertaken in various areas-such as effective and ineffective board performance practices of non-profit organisations, board performance measurement indicators within the arts sector, and mission fulfilment as a result of non-profit organisational effectiveness-research from an extensive literature search did not reveal empirical evidence of the relationship between board performance and mission fulfilment of non-profit arts boards. Against this background, the research issue for the thesis is: How does board performance contribute to mission fulfilment by the non-profit arts organisation?

Understanding pentecostal motivations for undertaking community development in South East Asia : evidence of an expanded understanding of holistic mission

A shift has been observed in the activities of by Western-based, pentecostal mission organisations in mainland South East Asia. Where once these mission organisations avoided formal community development programs as a distraction to their understanding of mission, the funding for and implementation of such programs has increased dramatically in recent times. This shift in focus is best understood by considering motivations and changing pentecostal perceptions of mission. The research is based on new primary data collected through interviews with long-term and senior pentecostal mission practitioners engaging in development projects in mainland South East Asia. It explores their motivations for engaging in community development, and in particular the extent to which community development programs are seen as a strategy for proselytisation as compared the extent to which they are conducted out of other humanitarian motivations. Analysis of this data challenges preconceived notions of proselytisation being the primary motive of pentecostal mission agencies, and demonstrates a more holistic idea of mission.