50,676 research outputs found

    Modelling passenger demand for parkway rail stations

    Get PDF
    Interest in Parkway stations emerged in the 1980s. These act as convenient out-of-town stations for inter-urban rail journeys. There were 13 so-called Parkway stations in Great Britain in 1999 and two have subsequently been opened. This paper reports the development and application of a new Parkway forecasting model which was conducted for the Association of Train Operating Companies (ATOC), undertaken as part of an extensive update to the Passenger Demand Forecasting Handbook, which recommends demand forecasting frameworks and associated parameters that are widely used in the railway industry in Great Britain. The objective was to develop a model that had more desirable properties and was more straightforward to apply than the previously recommended procedure. The focus is entirely upon inter-urban journeys of over 80 km.The model forecasts the demand for Parkway stations based solely on rail ticket sales data and its properties are illustrated with two case study applications. The nature of Parkway stations forces consideration of competition, and it is demonstrated that the inclusion of a station choice component leads to a somewhat improved explanatory power and a more plausible generalised cost elasticity.In addition to the methodological developments, the model has provided generally reasonable elasticities and forecasts and shown that Parkway users have different preferences to rail travellers in general. In a test based around a newly opened Parkway station, its forecasts are more accurate than the procedure it replaces

    Optimisation of different land use regimes in the Mhala district

    Get PDF
    Communal, commercial and nature conservation land use alternatives occur together at the perimeter of Manyeleti Game Reserve in Mhala district. The different land use alternatives were compared with one another with the purpose of determining the best possible land use. Communal households and the Seville scheme households perform poorly in support of household welfare. This holds disastrous implications for future generations if nothing is done. The Uthla scheme households perform better and generate larger incomes, but at the expense of communal households. Both schemes are highly subsidised by government. Manyeleti Game Reserve is mismanaged and the worst land use alternative in the area, providing no benefit to people living at its perimeter and needs government support for its continued survival. Using multi criteria analysis a combination of communal and conservation land use alternatives is found to be the best alternative, maximising the communities' welfare and conserving the environment.Land Economics/Use,

    Incorporating stakeholders’ knowledge in group decision-making

    Get PDF
    International audienc

    Alternative to Comprehensive Ecosystem Services Markets: The Contribution of Forest-Related Programs in New Zealand

    Get PDF
    Due to the public goods characteristics of many ecosystem services and their vital importance to human welfare, various mechanisms have been put in place to motivate private landowners in the provision of ecosystem services. A common approach is to try to develop a comprehensive ecosystem services market where landowners can receive payments from beneficiaries of ecosystem services. Much research has been directed at developing methods for valuing the range of ecosystem services so that they can be incorporated into ecosystem services markets. However, valuation methods are difficult, expensive and time consuming. Other approaches to the provision of ecosystem services such as payments for ecosystem services usually focus on a single service like water or biodiversity. However, in the provision of a particular ecosystem service, there are spill-over effects of providing other ecosystem services, and thus studying those spill-over effects may provide a simple and cost-effective way of ensuring the provision of a wide range of ecosystem services. In New Zealand, there are a variety of forestry programs which provide incentives to landowners to plant trees on their lands to meet particular objectives, but which also produce other ES. This research aims to evaluate the cost-effectiveness of the provision of a wide range of ES by these approaches, the New Zealand Emissions Trading Scheme, the East Coast Forestry Scheme, and the QEII National Trust.ecosystem services market, spill-over effect, cost-effectiveness, New Zealand, Environmental Economics and Policy,

    Operational Research in Education

    Get PDF
    Operational Research (OR) techniques have been applied, from the early stages of the discipline, to a wide variety of issues in education. At the government level, these include questions of what resources should be allocated to education as a whole and how these should be divided amongst the individual sectors of education and the institutions within the sectors. Another pertinent issue concerns the efficient operation of institutions, how to measure it, and whether resource allocation can be used to incentivise efficiency savings. Local governments, as well as being concerned with issues of resource allocation, may also need to make decisions regarding, for example, the creation and location of new institutions or closure of existing ones, as well as the day-to-day logistics of getting pupils to schools. Issues of concern for managers within schools and colleges include allocating the budgets, scheduling lessons and the assignment of students to courses. This survey provides an overview of the diverse problems faced by government, managers and consumers of education, and the OR techniques which have typically been applied in an effort to improve operations and provide solutions

    Tails from the Peak District: adjusted censored mixture models of EQ-5D health state utility values

    Get PDF
    Health state utility data generated using the EQ-5D instrument are typically right bounded at one with a substantial gap to the next set of observations, left bounded by some negative value, and are multi modal. These features present challenges to the estimation of the e¤ect of clinical and socioeconomic characteristics on health utilities. We present an adjusted censored model and then use this in a flexible, mixture modelling framework to address these issues. We demonstrate superior performance of this model compared to linear regression and Tobit censored regression using a dataset from repeated observations of patients with rheumatoid arthritis. We �nd that three latent classes are appropriate in estimating EQ-5D from function, pain and sociodemographic factors. Analysis of utility data should apply methods that recognise the distributional features of the data
    corecore