title: Multi-objective hybrid optimization for optimal sizing of a hybrid renewable power system for home applications

authors: Hossain, Md. Arif

abstract: An optimal energy mix of various renewable energy sources and storage devices is critical for a profitable and reliable hybrid microgrid system. This work proposes a hybrid optimization method to assess the optimal energy mix of wind, photovoltaic, and battery for a hybrid system development. This study considers the hybridization of a Non-dominant Sorting Genetic Algorithm II (NSGA II) and the Grey Wolf Optimizer (GWO). The objective function was formulated to simultaneously minimize the total energy cost and loss of power supply probability. A comparative study among the proposed hybrid optimization method, Non-dominant Sorting Genetic Algorithm II, and multi-objective Particle Swarm Optimization (PSO) was performed to examine the efficiency of the proposed optimization method. The analysis shows that the applied hybrid optimization method performs better than other multi-objective optimization algorithms alone in terms of convergence speed, reaching global minima, lower mean (for minimization objective), and a higher standard deviation. The analysis also reveals that by relaxing the loss of power supply probability from 0% to 4.7%, an additional cost reduction of approximately 12.12% can be achieved. The proposed method can provide improved flexibility to the stakeholders to select the optimum combination of generation mix from the offered solutions.

text: Multi-objective hybrid optimization for optimal sizing of a hybrid renewable power system for home applications An optimal energy mix of various renewable energy sources and storage devices is critical for a profitable and reliable hybrid microgrid system. This work proposes a hybrid optimization method to assess the optimal energy mix of wind, photovoltaic, and battery for a hybrid system development. This study considers the hybridization of a Non-dominant Sorting Genetic Algorithm II (NSGA II) and the Grey Wolf Optimizer (GWO). The objective function was formulated to simultaneously minimize the total energy cost and loss of power supply probability. A comparative study among the proposed hybrid optimization method, Non-dominant Sorting Genetic Algorithm II, and multi-objective Particle Swarm Optimization (PSO) was performed to examine the efficiency of the proposed optimization method. The analysis shows that the applied hybrid optimization method performs better than other multi-objective optimization algorithms alone in terms of convergence speed, reaching global minima, lower mean (for minimization objective), and a higher standard deviation. The analysis also reveals that by relaxing the loss of power supply probability from 0% to 4.7%, an additional cost reduction of approximately 12.12% can be achieved. The proposed method can provide improved flexibility to the stakeholders to select the optimum combination of generation mix from the offered solutions.

year: 2023-01-01

title: Counsellors becoming counsellor educators: a New Zealand example

authors: Crocket, Kathie

subjects: counsellor education

abstract: The international literature on adjunct faculty in higher education, including professional education, does not yet cover counsellor education in particular, although many programmes rely on the teaching services of experienced practitioners in adjunct faculty positions. This article reports on a small, exploratory study conducted with adjunct faculty members appointed to one-year, full time fellowships in the counsellor education programme in which the authors are full time academics. The study identifies the mutual benefits of this practice, to the practitioners who teach as adjunct faculty and to the counsellor education programme. It also identifies areas that are problematic. In view both of the identified benefits and the difficulties experienced, the authors discuss their responsibilities as permanent academic staff to the practitioners who teach as adjunct faculty. The authors suggest that programmes benefit from the ethic of hospitality that adjunct faculty can offer and invite academic staff to bring (un)conditional hospitality to the collegial relationship in counsellor education.

text: Counsellors becoming counsellor educators: a New Zealand example The international literature on adjunct faculty in higher education, including professional education, does not yet cover counsellor education in particular, although many programmes rely on the teaching services of experienced practitioners in adjunct faculty positions. This article reports on a small, exploratory study conducted with adjunct faculty members appointed to one-year, full time fellowships in the counsellor education programme in which the authors are full time academics. The study identifies the mutual benefits of this practice, to the practitioners who teach as adjunct faculty and to the counsellor education programme. It also identifies areas that are problematic. In view both of the identified benefits and the difficulties experienced, the authors discuss their responsibilities as permanent academic staff to the practitioners who teach as adjunct faculty. The authors suggest that programmes benefit from the ethic of hospitality that adjunct faculty can offer and invite academic staff to bring (un)conditional hospitality to the collegial relationship in counsellor education.

year: 2012

title: Imagining our own approaches

authors: Smith, Linda Tuhiwai

abstract: I spent some formative years of my life either in the back of museums or their basements helping my father, a scholar of Māori Studies, and keeping myself out of trouble. In the late 1960s I had one small job in the library basement of the Peabody Museum in Salem, Massachusetts, typing new labels for the captains’ log books of ships that were sailing during the American Revolution. I read most of those journals that consisted of pages and pages of wind directions with the rare glimpse of an encounter with another ship or a list of supplies. Why were we there in Salem when we came from Aotearoa, New Zealand? We were there because Salem was the home base for ships that sailed into the Pacific and returned home with collections of materials from the various Pacific Islands countries they visited. My father was studying elaborately carved items from the Marquesa Islands that looked very much like Māori designs.

text: Imagining our own approaches I spent some formative years of my life either in the back of museums or their basements helping my father, a scholar of Māori Studies, and keeping myself out of trouble. In the late 1960s I had one small job in the library basement of the Peabody Museum in Salem, Massachusetts, typing new labels for the captains’ log books of ships that were sailing during the American Revolution. I read most of those journals that consisted of pages and pages of wind directions with the rare glimpse of an encounter with another ship or a list of supplies. Why were we there in Salem when we came from Aotearoa, New Zealand? We were there because Salem was the home base for ships that sailed into the Pacific and returned home with collections of materials from the various Pacific Islands countries they visited. My father was studying elaborately carved items from the Marquesa Islands that looked very much like Māori designs.

year: 2015