Albert Vasso, Richard Cobb, John Colombi, Bryan Little and David Meyer
The US Government is challenged to maintain pace as the world’s de facto provider of space object cataloging data. Augmenting capabilities with nontraditional sensors present an…
Abstract
Purpose
The US Government is challenged to maintain pace as the world’s de facto provider of space object cataloging data. Augmenting capabilities with nontraditional sensors present an expeditious and low-cost improvement. However, the large tradespace and unexplored system of systems performance requirements pose a challenge to successful capitalization. This paper aims to better define and assess the utility of augmentation via a multi-disiplinary study.
Design/methodology/approach
Hypothetical telescope architectures are modeled and simulated on two separate days, then evaluated against performance measures and constraints using multi-objective optimization in a heuristic algorithm. Decision analysis and Pareto optimality identifies a set of high-performing architectures while preserving decision-maker design flexibility.
Findings
Capacity, coverage and maximum time unobserved are recommended as key performance measures. A total of 187 out of 1017 architectures were identified as top performers. A total of 29% of the sensors considered are found in over 80% of the top architectures. Additional considerations further reduce the tradespace to 19 best choices which collect an average of 49–51 observations per space object with a 595–630 min average maximum time unobserved, providing redundant coverage of the Geosynchronous Orbit belt. This represents a three-fold increase in capacity and coverage and a 2 h (16%) decrease in the maximum time unobserved compared to the baseline government-only architecture as-modeled.
Originality/value
This study validates the utility of an augmented network concept using a physics-based model and modern analytical techniques. It objectively responds to policy mandating cataloging improvements without relying solely on expert-derived point solutions.
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Marie-Noelle Albert and Nancy Michaud
Studies on vulnerability in the workplace, although relevant, are rare because it is difficult to access. This article aims to focus on the benefits of using autopraxeography to…
Abstract
Purpose
Studies on vulnerability in the workplace, although relevant, are rare because it is difficult to access. This article aims to focus on the benefits of using autopraxeography to study and step back from vulnerability at work.
Design/methodology/approach
Autopraxeography uses researchers' experience to build knowledge.
Findings
Autopraxeography provides a better understanding of vulnerability and the opportunity to step back from the difficulties experienced. Instead of ignoring experiences related to vulnerability, this method makes it possible to transform them into new avenues of knowledge. Moreover, it enables researchers to step back from experiences of vulnerability, thus making them feel more secure.
Originality/value
The main differences from other self-studies stem from the epistemological paradigm in which this method is anchored: pragmatic constructivism. The most important difference is the production of generic knowledge in three recursive steps: writing in a naïve way, developing the epistemic work and building generic knowledge.
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Albert Postma and Ian Seymour Yeoman
As the Journal of Tourism Futures celebrates its 10th anniversary, Dr. Albert Postma (NHL Stenden University) interviews Professor Ian Yeoman (NHL Stenden University) as co-editor…
Abstract
Purpose
As the Journal of Tourism Futures celebrates its 10th anniversary, Dr. Albert Postma (NHL Stenden University) interviews Professor Ian Yeoman (NHL Stenden University) as co-editor of the Journal of Tourism Futures and expert on scenario planning in tourism and hospitality.
Design/methodology/approach
A personal interview.
Findings
Yeoman shares his expertise on the establishment and evolution of the Journal of Tourism Futures, in the context of the growth of futures thinking in tourism within a science and industry context.
Originality/value
The interview provides insights in the evolution of futures thinking in tourism, reflected in the growth and growing reputation of the Journal of Tourism Futures.