499 results for University of Otago, Working or discussion paper

  • Foregone profit in the wine industry

    Neuninger, Rosemarie; Mather, Damien William; Duncan, Tara (2015-06-02)

    Working or discussion paper
    University of Otago

    Background and Aims: Wine awards are frequently used as extrinsic cues for wine categories. The aim of this paper is to show the forgone profit arising from failures to make optimal use of awards when positioning wine brands to consumer segments. Methods and Results: Four award statuses were tested: a well-known award, multiple awards, a fictitious award used as a control (an award without consumer trust) and, no award. Participants tasted eight wine samples: the first four without extrinsic cues; the next four used extrinsic cues with varying award status. Each sample was rated for liking, likelihood to buy and price willing to pay. Low-involvement consumers’ perceived liking and price willing to pay were improved by multiple (real gold) awards compared to high-involvement consumers. Conclusions: Trust in awards increased the price consumers were willing to pay for wine with an award. For high-involvement consumers who distrusted awards, multiple wine awards and fictitious awards negatively influenced perceived liking, likelihood to buy and price willing to pay. Significance of the Study: This is the first study to report on the combined influence of wine awards and consumers’ sensory perceptions of wine on perceived liking, likelihood to buy and price willing to pay.

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  • Understanding the Etiology of Electoral Violence: The Case of Zimbabwe

    Fielding, David (2015-06)

    Working or discussion paper
    University of Otago

    Recent theoretical and empirical work indicates that incumbent governments are likely to attempt to influence election outcomes by violent means (rather than by bribery and fraud) when their level of popular support is relatively low. However, evidence also suggests that in some countries electoral violence can be quite easy to thwart through peaceful means. This may seem surprising when the incumbent has control over an extensive and well-equipped state security apparatus. The analysis of Zimbabwean data in this paper suggests an explanation: the incumbent prefers to avoid the direct involvement of the state security apparatus when intimidating voters (perhaps because such involvement would undermine the incumbent’s legitimacy abroad), and relies instead on informal groups with very limited organizational capacity. One consequence in Zimbabwe is that the intimidation is heavily focused in places where the incumbent is relatively popular, ceteris paribus.

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  • Vector opinion dynamics: An extended model for consensus in social networks

    Alaali, Alya; Savarimuthu, Bastin Tony Roy; Purvis, Maryam A. (2008-10)

    Working or discussion paper
    University of Otago

    Most people hold a variety of opinions on different topics ranging from sports, entertainment, spiritual beliefs to moral principles. These can be based on a personal reflection and evaluation or on their interactions with others. How do we influence others in our social network and how do they influence us and how do we reach consensus? In this paper, we present our investigations based on the use of multiple opinions (a vector of opinions) that should be considered to determine consensus in a society. We have extended Deffuant model and have tested our model on top of two well-known network topologies the Barabasi-Albert network and the Erdos-Renyi network. We have implemented a two phase filtering process determining the consensus.

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  • Bridging the gap between the Model-Driven Architecture and ontology engineering

    Cranefield, Stephen; Pan, Jin (2005-12)

    Working or discussion paper
    University of Otago

    Please note that there is a revised version of this paper available at http://hdl.handle.net/10523/1260 (currently in press with the International Journal of Human-Computer Studies).

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  • Spatial data acquisition from motion video

    Williams, Mark (1996-12)

    Working or discussion paper
    University of Otago

    Part of the GeoComputation '96 Special Issue 96/25; follow the "related link" to download the entire collection as a single document.

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  • The derivation of thematic map layers from entity-relationship data models

    Firns, Peter (1993-11)

    Working or discussion paper
    University of Otago

    Please note that this is a searchable PDF derived via optical character recognition (OCR) from the original source document. As the OCR process is never 100% perfect, there may be some discrepancies between the document image and the underlying text.

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  • A software framework for application development using ZigBee protocol

    Savarimuthu, Bastin Tony Roy; Bruce, Morgan; Purvis, Maryam A. (2009-04)

    Working or discussion paper
    University of Otago

    The problem with the uptake of new technologies such as ZigBee is the lack of development environments that help in faster application software development. This paper describes a software framework for application development using ZigBee wireless protocol. The architecture is based on defining XML based design interfaces that represent the profiles of ZigBee nodes that are used in the application.

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  • Politics and techniques of data encryption

    Wolfe, Henry B (1996-06)

    Working or discussion paper
    University of Otago

    Please note that this is a searchable PDF derived via optical character recognition (OCR) from the original source document. As the OCR process is never 100% perfect, there may be some discrepancies between the document image and the underlying text.

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  • Software development, CASE tools and 4GLs—A survey of New Zealand usage. Part 1: 750 New Zealand organisations

    MacDonell, Stephen (1993-11)

    Working or discussion paper
    University of Otago

    This paper reports the results of a recent national survey which considered the use of CASE tools and 4GLs in commercial software development. Responses from just over 750 organisations show a high degree of product penetration, along with extensive use of package solutions. Use of 3GLs in general, and of COBOL in particular, is still relatively widespread, however. In terms of systems analysis and design techniques under a CASE/4GL environment, screen and report definition is the most preferred technique, although both dataflow analysis and data modelling also feature strongly.

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  • Adaptive, evolving, hybrid connectionist systems for image pattern recognition

    Kasabov, Nikola; Israel, Steven; Woodford, Brendon J (1999-05)

    Working or discussion paper
    University of Otago

    Please note that this is a searchable PDF derived via optical character recognition (OCR) from the original source document. As the OCR process is never 100% perfect, there may be some discrepancies between the document image and the underlying text. Searching and selecting the text of this PDF may also not work in all viewers; for example, they have been found to not work in Apple's Preview application. We therefore recommend Adobe Reader for viewing and searching this PDF.

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  • Economic integration and the choice of commodity tax base with endogenous market structures

    McCracken, Scott; Stähler, Frank (2007-02)

    Working or discussion paper
    University of Otago

    This paper analyzes the choice of commodity tax base when countries set their taxes non-cooperatively in a two-country symmetric reciprocal dumping model of intra-industry trade with free entry and trade costs. We show that the consumption base (destination principle) dominates the production base (origin principle) when trade costs are high or demand is linear. For lower levels of trade costs and nonlinear demand, the welfare ranking of the two tax bases is ambiguous. Hence, there is no clear preference for a tax principle with an ongoing movement towards closer economic Integration. JEL-Classification: F12, H20.

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  • Finding medical information on the Internet: Who should do it and what should they know

    Parry, David (1999-06)

    Working or discussion paper
    University of Otago

    More and more medical information is appearing on the Internet, but it is not easy to get at the nuggets amongst all the spoil. Bruce McKenzie's editorial in the December 1997 edition of SIM Quarterly dealt very well with the problems of quality, but I would suggest that the problem of accessibility is as much of a challenge. As ever-greater quantities of high quality medical information are published electronically, the need to be able to find it becomes imperative. There are a number of tools to find what you want on the Internet---search engines, agents, indexing and classification schemes and hyperlinks, but their use requires care, skill and experience.

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  • Classroom tariff wars: a tariff setting game

    Winchester, Niven (2004-01)

    Working or discussion paper
    University of Otago

    This paper outlines a classroom tariff setting game that allows students to explore the consequences of import tariffs imposed by large countries (countries able to influence world prices). Groups of students represent countries, which are organised into trading pairs. Each group’s objective is to maximise welfare by choosing an appropriate ad valorem tariff. The game is built on a computable general equilibrium model, which allows each nation’s utility and terms of trade under alternative tariff regimes to be expressed quantitatively. The exercise encourages students to consider terms of trade improvements and efficiency losses resulting from large-country tariffs and provides a backdrop to discuss the Nash equilibrium of a tariff war. Feedback from students who have participated in trial simulations indicates that the game is a useful supplement to traditional teaching methods.

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  • Establishing relationships between specification size and software process effort in CASE environments

    MacDonell, Stephen (1995-07)

    Working or discussion paper
    University of Otago

    Advances in software process technology have rendered many existing methods of size assessment and effort estimation inapplicable. The use of automation in the software process, however, provides an opportunity for the development of more appropriate software size-based effort estimation models. A specification-based size assessment method has therefore been developed and tested in relation to process effort on a preliminary set of systems. The results of the analysis confirm the assertion that, within the automated environment class, specification size indicators (that may be automatically and objectively derived) are strongly related to process effort requirements.

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  • An innovative approach to National Football League standings using optimal bonus points

    Winchester, Niven; Stefani, Raymond T. (2009-06-01)

    Working or discussion paper
    University of Otago

    Bonus points provide a simple way to improve the accuracy of league standings. We investigate the inclusion of bonuses in the National Football League (NFL) using a prediction model built on league points. Both touchdown-based and narrow-loss bonuses are shown to be significant. Our preferred system awards four points for a win, two for a tie, one point for scoring four or more touchdowns and one point for losing by seven or fewer points. Such a system would also make it easier for supporters to identify playoff contenders and place importance on otherwise meaningless end-of-game plays.

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  • Exploiting the advantages of object-oriented programming in the implementation of a database design environment

    Stanger, Nigel; Pascoe, Richard (1997-06)

    Working or discussion paper
    University of Otago

    In this paper, we describe the implementation of a database design environment (Swift) that incorporates several novel features: Swift’s data modelling approach is derived from viewpoint-oriented methods; Swift is implemented in Java, which allows us to easily construct a client/server based environment; the repository is implemented using PostgreSQL, which allows us to store the actual application code in the database; and the combination of Java and PostgreSQL reduces the impedance mismatch between the application and the repository.

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  • Valuing real options using implied binomial trees and commodity futures options

    Arnold, Tom; Crack, Timothy; Schwartz, Adam (2005-01-05)

    Working or discussion paper
    University of Otago

    The full text of this document is only available from the Social Science Research Network. Please use the related link to access the full text.

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  • Implied binomial trees in Excel without VBA

    Arnold, Tom; Crack, Timothy; Schwartz, Adam (2004-05-14)

    Working or discussion paper
    University of Otago

    The full text of this document is only available from the Social Science Research Network. Please use the related link to access the full text.

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  • Cheap Talk in a New Keynesian Model

    Wesselbaum, Dennis (2016-02)

    Working or discussion paper
    University of Otago

    This paper shows that the stance of fiscal policy does have significant impact on the conduct of monetary policy in the United States. Further, we document that the implied fiscal-monetary policy interactions are subject to regime instability, using a Markov-switching model. Then, we develop a microfoundation of regime switches using a cheap talk game between central bank and government. As a case study, we simulate the effects of regime switches within an otherwise standard New Keynesian model using the cheap talk game in the state-space of our model.

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  • VoIP application development using SIP protocol

    Milic, Dee; Zhou, Dong; Situ, Hailing (2008-03)

    Working or discussion paper
    University of Otago

    This aim of this project was to the explore JAIN SLEE standard 1.1 programming model and SIMPLE (Sip for Instant Messaging and Presence Leveraging Extensions) protocols, developing a Voice over Internet Protocol (VoIP) application with functions that include making a phone call, instant messaging to peers, and at the same time providing users with buddy list information of their peers. The JAIN SLEE platform RhinoSDK 2.0 (developed by OpenCloud) was to be used and an example application that is included with RhinoSDK 2.0 was to be extended. During the project the phone call functionality was scoped out of the project and the focus was set on implementing the instant messaging and presence functionality. This report describes the functions that have been implemented on the server side and client side of this VoIP application.

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