Random terrain generation is the procedural creation of a set of data that represents closely a believable landscape. Common techniques of achieving this include the use of fractals and noise. Such techniques usually require a large volume of memory, as the geometry of the terrain needs to be calculated and stored at run time. Given the limited memory available on mobile devices, such as mobile telephones, the storage of the data required to represent massive terrains can be difficult. In this paper, we propose a novel method of storing terrain data on devices with limited memory. This method involves placing pre-computed blocks of terrain, known as terrain tiles, together in a psuedo-random manner as governed by a noise function known as Perlin noise. This allows large amounts of terrain data to be represented while still giving the appearance of a randomly generated terrain. Traditionally, Perlin noise is used in the procedural generation of textures and the modeling of naturally occurring phenomena. Using Perlin noise, only a subset of the overall data generated by the function needs to be stored at any one time. The approach outlined in this paper associates a tile of terrain with each value generated by the Perlin Noise function, meaning that only a subsection of the total terrain is stored in memory at any one time. We show how this process can be executed in real time on a resource limited device known as the Game Boy Advance, and also illustrate a significant reduction in the memory requirements of terrain storage when compared with traditional methods.
P-Centres represent the perceptual moments of occurrence of acoustic signals and are an important parameter for duration modelling in speech synthesis applications. While a number of algorithms have been proposed previously to achieve P- Centre extraction it is shown in this paper that none yield reliable measures or are robust in implementation. A software only solution is presented which enables the rhythm setting experiment to be carried out in a reliable and flexible manner. Keywords - P-Centre, Speech rhythm, Psychoacoustics.
Abstract: tion of knowledge to a suitable task. PBL has been successfully applied to civil, mechanical and electrical engineering as well as to medical, dental and veterinary education. The introduction of PBL into educational courses is related to a constructivist theory of learning. This theory is based on the premise that learners come to know something new, not by passively hearing it, but by actively engaging with it and connecting it to what they already know. In other words, a learner's current...
Abstract Electrical demand is driven by economic and human activity, which has obvious daily, weekly and yearly cycles as well as a long -term trend and special periods such as bank holidays, Christmas etc., all of whic h are reflected in load data. These characteristics of electrical demand,must,inevitably be incorporated into any demand-forecasting model. However, with the exception of a few papers, the vast bulk of the literature on electrical demand,forecasting is con cerned with forecasting techniques. This paper proposes,several methods,with which,to quantify the characteristics of Irish electrical load data prior to modelling. 1. Introduction This paper describes preliminary analysis of Irish electrical load data, which is important for model
Part 1 - Update on commercialisation plans and activities at NUIM: patents, licenses, grants, Innovation Centre.
This paper presents some findings from a research project that sought to generate an empirical account of the texture of social life in new Irish suburbs, through a comparative analysis of four suburban areas. The paper focuses on differences in the structure of family and kinship relations in different kinds of suburbs, and suggests some ways in which those differences are linked to levels of attachment to place amongst couples with young children. We found that, in new Irish suburbs, many families continue to have access to family circles in the locality or nearby. They rely more on kin for everyday social support when their children are very young, but the extent to which they increase their reliance on neighbours as children reach primary school age varies according to the socio-demographic composition of the suburb where they live.