147 resultados para Conceptual characterizations


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Teaching online involves providing an environment that is interactive and engaging. A large part of this is providing suitable learning resources. In this talk we will demonstrate an efficient method for producing conceptual maps of the actual course content, showing the structure of the subject for students in a visual way. The structures that result allows for learning resources to be linked in as required. The maps are developed using PowerPoint but they can be deployed in a web-friendly format or on CD-ROM.

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IT security outsourcing is the establishment of a contractual relationship with an outside vendor to assume responsibility for one or more security functions. Outsourcing in IS has had a variable history of success and the complexity of the decision making process leads to a substantial degree of uncertainty. This is especially so in the realm of IS security since the protection of both hardware and software systems in is placed in the hands of an external provider. This is the second paper discussing the improvement of the effectiveness of the decision making process by means of a conceptual model using Soft System Methodology techniques that integrates security benefits, costs and their respective performance measures. In this paper the methodology used to develop the model and its validation are discussed.

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IT security outsourcing is the establishment of a contractual relationship between an organization with an outside vendor which assumes responsibility for the organisation’s security functions. Outsourcing in IS has had a variable history of success and the complexity of the decision making process leads to a substantial degree of uncertainty. This is especially so in the realm of IS security since the protection of both hardware and software systems is placed in the hands of an external provider. This paper is a fuller and more comprehensive paper of a previous paper outlining the effectiveness of the decision making process by means of a conceptual model using Soft System Methodology techniques that integratessecurity benefits, costs and their respective performance measures. In this paper the methodology used to develop the model is discussed in detail.

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The article presents strategies for communicating the concept of square roots to limited English-proficient students. Instead of using mathematical terminology, mathematics teachers could communicate the concept of square roots by integrating the literal concept of square to the actual meaning of a square root. Such approach addresses the learning difficulty experienced by limited English proficient students who tend to associate square roots to geometric concepts. Several strategies for illustrating the concept of a square root using square figures are presented.

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The article explores the conceptual complexity and apparent contradictions in the language of mathematics and suggests ways to handle these problems. Mathematics, as described the author, is a formal, artificially constructed language. One problem arises from the changes of gradient and rates of change of gradient, continuous functions. Conceptual conflicts also arise when least upperbounds and greatest lower-bounds in discussing sequences and series, convergence and limits are considered.

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This article reviews the precautionary principle as an approach in addressing decisions with far reaching environmental consequences under scientific uncertainty. The precautionary principle is intended to assist with structuring environmentally risky decisions toward sustainable development. It responds to the lack of scientific evidence of a potential environmental problem. There is currently no framework to assist with the process indicating the areas of importance and stages of decisionmaking. This paper suggests a framework to assist with the process of decision-making for complex environmental problems. The main areas of concern are the issues relating to the costs, risks, and benefits assessments. The main stages of the framework includes; definition of the problem, analysis of the potential environmental risks, assessments of specific anticipated legal, social, economic, political, and technological impacts, review of the key players (social, organisation and government) obligations, comparison of alternatives available, determination of accountability, implementation, decision making, monitoring and control processes.

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This research analyses the current literature on IT security outsourcing and the organisational attitudes towards this approach to determine the applicability of outsourcing IT security in a commercial environment. A conceptual model is developed as the main goal of research which provides guidance in the process of outsourcing IT security functions to a third-party security service provider. The research conducted has established a complete process for outsourcing IT security.

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This paper proposes a conceptual matrix model with algorithms for biological data processing. The required elements for constructing a matrix model are discussed. The representative matrix-based methods and algorithms which have potentials in biological data processing are presented / proposed. Some application cases of the model in biological data processing are studied, which show the applicability of this model in various kinds of biological data processing. This conceptual model established a framework within which biological data processing and mining could be conducted. The model is also heuristic to other applications.

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The topic of this paper focuses on proactive versus reactive business ethics performance in the marketplace. The internal perception of a corporation and the external perception of the same corporation are used as generic determinants of business ethics performance. In turn, they are underpinned by evolutionary and contextual issues in the marketplace. The authors provide a generic conceptual framework of proactive and reactive business ethics performance. Case illustrations underpin the positives and negatives of proactive and reactive business ethics in the marketplace. A profile analysis process of proactive and reactive business ethics performance is also outlined. The gap between the internal and external perceptions of a corporation’s actions becomes crucial to achieve successful business ethics performance in the marketplace. Therefore, a corporation’s current business ethics performance should always be regarded as an on-the-spot-account that is either proactive or reactive. An important insight of this research is that business ethics performance requires the ongoing re-connection with reality by corporations.

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In acknowledging the importance of ontologies in conceptual modeling, database integration and business process modeling, this paper introduces a set of principles for building ontologies. Starting from Guarino's meta-properties of ontological terms, the paper describes the denotational semantics of the meta-properties and derives from them some engineering rules and checks for constructing domain specific conceptual models, based on the overarching requirement to assign meanings to concepts using tags and labels. Parallel research by the authors into the use of contextual references and roles to restrict such meanings will be published elsewhere.

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Constructivism, as a set of theories about how learners learn, has been an important discourse in the educational research literature for a number of years. Interestingly, it has been far more visible in science education research than in environmental education research. This article considers conceptual change theory within constructivism as a contested concept, outlines differing expressions of constructivism in science education and environmental education, and argues for approaches to environmental education that adopt socially constructivist perspectives with respect to the character of the subject matter content as well as to learners' apprehension of such content. In considering implications for research, this perspective is juxtaposed with a recent United States Education Act, which prescribes a far more objectivist approach to educational research and which serves as a reminder that research itself is a powerful factor in shaping how we construct the nature of subject matter, learning and the implications of these for teaching practice.

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There is a strong international, national and regional mandate for Education for Sustainable Development (ESD): the United Nations has gazetted a 'decade of education for sustainability; sustainability is Australia's top research priority area; and there is increasing local concern about specific sustainability issues like the effect of the sea change movement on Australia's coastal communities. In this paper I will consider two contemporary conceptual issues in ESD: the contested nature of the field itself; and the relationship between traditional discipline-based educational structures and ESD. In addition to these conceptual issues, I will draw on a recent practical example of fl sustainability project in raising some questions concerning the distinguishing characteristics of sustainability issues that perhaps ought to be addressed in ESD.