title: Exploring student perceptions of product-service systems

authors: Lubis, Pierre Yohanes

abstract: It is important that Product Design students understand the scope of sustainable design. The purpose of this study is to pilot the introduction of Product-Service System (PSS) Design to undergraduate students in Industrial Product Design. The study aims to test students' perceptions of how the Product Design field is evolving to embrace sustainable approaches address the needs of less-privileged communities. This chapter highlights how the transformation from product design to PSS Design is understood by students and how it can count towards sustainability and be preferred over product design. The advantages of a PSS over the design of products alone can be backed by the concept of sustainability when contextual issues such as cultural and economic factors are being considered. PSS was received to be an appropriate solution by providing job creation in communities, reducing consumerism, and, at the same time, being perceived to challenge the concept of ownership of products and services.

text: Exploring student perceptions of product-service systems It is important that Product Design students understand the scope of sustainable design. The purpose of this study is to pilot the introduction of Product-Service System (PSS) Design to undergraduate students in Industrial Product Design. The study aims to test students' perceptions of how the Product Design field is evolving to embrace sustainable approaches address the needs of less-privileged communities. This chapter highlights how the transformation from product design to PSS Design is understood by students and how it can count towards sustainability and be preferred over product design. The advantages of a PSS over the design of products alone can be backed by the concept of sustainability when contextual issues such as cultural and economic factors are being considered. PSS was received to be an appropriate solution by providing job creation in communities, reducing consumerism, and, at the same time, being perceived to challenge the concept of ownership of products and services.

year: 2025

title: Exact and quasiexact solvability of second-order superintegrable quantum systems: I. Euclidean space preliminaries

authors: Kalnins, Ernie G.

subjects: Mathematics

abstract: We show that second-order superintegrable systems in two-dimensional and three-dimensional Euclidean space generate both exactly solvable (ES) and quasiexactly solvable (QES) problems in quantum mechanics via separation of variables, and demonstrate the increased insight into the structure of such problems provided by superintegrability. A principal advantage of our analysis using nondegenerate superintegrable systems is that they are multiseparable. Most past separation of variables treatments of QES problems via partial differential equations have only incorporated separability, not multiseparability. Also, we propose another definition of ES and QES. The quantum mechanical problem is called ES if the solution of Schrödinger equation can be expressed in terms of hypergeometric functions mFn and is QES if the Schrödinger equation admits polynomial solutions with coefficients necessarily satisfying a three-term or higher order of recurrence relations. In three dimensions we give an example of a system that is QES in one set of separable coordinates, but is not ES in any other separable coordinates. This example encompasses Ushveridze's tenth-order polynomial QES problem in one set of separable coordinates and also leads to a fourth-order polynomial QES problem in another separable coordinate set.

text: Exact and quasiexact solvability of second-order superintegrable quantum systems: I. Euclidean space preliminaries We show that second-order superintegrable systems in two-dimensional and three-dimensional Euclidean space generate both exactly solvable (ES) and quasiexactly solvable (QES) problems in quantum mechanics via separation of variables, and demonstrate the increased insight into the structure of such problems provided by superintegrability. A principal advantage of our analysis using nondegenerate superintegrable systems is that they are multiseparable. Most past separation of variables treatments of QES problems via partial differential equations have only incorporated separability, not multiseparability. Also, we propose another definition of ES and QES. The quantum mechanical problem is called ES if the solution of Schrödinger equation can be expressed in terms of hypergeometric functions mFn and is QES if the Schrödinger equation admits polynomial solutions with coefficients necessarily satisfying a three-term or higher order of recurrence relations. In three dimensions we give an example of a system that is QES in one set of separable coordinates, but is not ES in any other separable coordinates. This example encompasses Ushveridze's tenth-order polynomial QES problem in one set of separable coordinates and also leads to a fourth-order polynomial QES problem in another separable coordinate set.

year: 2006-03

title: The waters of the Maori: Maori law and state law

authors: Durie, Edward Taihākurei

abstract: This paper is for filing in the Waitangi Tribunal in relation to a claim that existing laws do not adequately accommodate the Māori proprietary interest in natural, water resources. The claim was initiated by the New Zealand Māori Council in association with ten tribal groups. It was later accompanied by 166 other Māori groups, whom the Tribunal joined as interested parties.

text: The waters of the Maori: Maori law and state law This paper is for filing in the Waitangi Tribunal in relation to a claim that existing laws do not adequately accommodate the Māori proprietary interest in natural, water resources. The claim was initiated by the New Zealand Māori Council in association with ten tribal groups. It was later accompanied by 166 other Māori groups, whom the Tribunal joined as interested parties.

year: 2017