title: Compositional synthesis of discrete event systems using synthesis abstraction

authors: Mohajerani, Sahar

subjects: computer science

abstract: This paper proposes a general method to synthesize a least restrictive supervisor for a large discrete event system model, consisting of a large number of arbitrary automata representing the plants and specifications. A new type of abstraction called synthesis abstraction is introduced and three rules are proposed to calculate an abstraction of a given automaton. Furthermore, a compositional algorithm for synthesizing a supervisor for large-scale systems of composed finite-state automata is proposed. In the proposed algorithm, the synchronous composition is computed step by step and intermediate results are simplified according to synthesis abstraction. Then a supervisor for the abstracted system is calculated, which in combination with the original system gives the least restrictive, nonblocking, and controllable behaviour.

text: Compositional synthesis of discrete event systems using synthesis abstraction This paper proposes a general method to synthesize a least restrictive supervisor for a large discrete event system model, consisting of a large number of arbitrary automata representing the plants and specifications. A new type of abstraction called synthesis abstraction is introduced and three rules are proposed to calculate an abstraction of a given automaton. Furthermore, a compositional algorithm for synthesizing a supervisor for large-scale systems of composed finite-state automata is proposed. In the proposed algorithm, the synchronous composition is computed step by step and intermediate results are simplified according to synthesis abstraction. Then a supervisor for the abstracted system is calculated, which in combination with the original system gives the least restrictive, nonblocking, and controllable behaviour.

year: 2011

title: Editorial: Entrepreneurship research: follow the yellow-brick road?

authors: Corner, Patricia

subjects: entrepreneurship

abstract: If entrepreneurship theory, research, and practice represent Oz at the culmination of the yellow-brick road, Dorothy and her companions have much company on their journey. For example, one source estimates that 460 million people worldwide either start a new business or become the owners of new businesses annually (Reynolds et al. 2002). Moreover, entrepreneurship is the fastest growing field of study in tertiary education in North America and Europe (Bygrave 2004) and fifteen specialized scholarly journals disseminate research on the topic globally. Within the policy-making arena, the governments of both Australia and New Zealand seek to promote entrepreneurship as an engine of economic growth. This special issue on entrepreneurship thus appears to be timely and can help to take stock of this topic within our Australasian context. It can also serve as a baseline from which to consider directions for future research in this important area of inquiry.

text: Editorial: Entrepreneurship research: follow the yellow-brick road? If entrepreneurship theory, research, and practice represent Oz at the culmination of the yellow-brick road, Dorothy and her companions have much company on their journey. For example, one source estimates that 460 million people worldwide either start a new business or become the owners of new businesses annually (Reynolds et al. 2002). Moreover, entrepreneurship is the fastest growing field of study in tertiary education in North America and Europe (Bygrave 2004) and fifteen specialized scholarly journals disseminate research on the topic globally. Within the policy-making arena, the governments of both Australia and New Zealand seek to promote entrepreneurship as an engine of economic growth. This special issue on entrepreneurship thus appears to be timely and can help to take stock of this topic within our Australasian context. It can also serve as a baseline from which to consider directions for future research in this important area of inquiry.

year: 2007

title: Bicultural perspectives on Māori legal research

authors: Mackinnon, Jacquelin

subjects: Māori

abstract: Increasingly, legal research projects undertaken at law school or in practice will involve Māori custom law and/or tikanga Māori.' The role of both Māori custom law and tikanga Māori is most evident in the work of the Māori Land Court in the interpretation and application of legislation relating to Māori land. Increasingly, general statutes incorporate Māori principles and values, such as those to be found in the Resource Management Act 1991, or make explicit reference to the principles of the Treaty of Waitangi. The statutory interpretation function of the Courts in relation to these, and less obvious examples, requires knowledge of tikanga Māori and/or Māori custom law. For any analysis of the work of the Courts or of the legislature, knowledge of tikanga Māori and/or custom law is required. Both Māori custom law and tikanga Māori are preserved by and accessed through the oral tradition. In addition to its role in the Courts and in relation to legislation, the most significant role played by the oral tradition is in the work of the Waitangi Tribunal. The oral tradition also plays an increasingly important part in other areas requiring research. What follows is an introduction to the oral tradition and its role in the legal system of Aotearoa/New Zealand. An understanding of the oral tradition is essential to the construction of a research path that is both ethical and effective.

text: Bicultural perspectives on Māori legal research Increasingly, legal research projects undertaken at law school or in practice will involve Māori custom law and/or tikanga Māori.' The role of both Māori custom law and tikanga Māori is most evident in the work of the Māori Land Court in the interpretation and application of legislation relating to Māori land. Increasingly, general statutes incorporate Māori principles and values, such as those to be found in the Resource Management Act 1991, or make explicit reference to the principles of the Treaty of Waitangi. The statutory interpretation function of the Courts in relation to these, and less obvious examples, requires knowledge of tikanga Māori and/or Māori custom law. For any analysis of the work of the Courts or of the legislature, knowledge of tikanga Māori and/or custom law is required. Both Māori custom law and tikanga Māori are preserved by and accessed through the oral tradition. In addition to its role in the Courts and in relation to legislation, the most significant role played by the oral tradition is in the work of the Waitangi Tribunal. The oral tradition also plays an increasingly important part in other areas requiring research. What follows is an introduction to the oral tradition and its role in the legal system of Aotearoa/New Zealand. An understanding of the oral tradition is essential to the construction of a research path that is both ethical and effective.

year: 2007