Search results

The purpose of this paper is to present the prerequisites for a part-out-based spares provisioning (PBSP) programme during the phase-out of an aircraft fleet. Furthermore, associated key decision criteria are identified and a framework for the phase-out management process is presented.

Once a decision has been taken to phase-out an aircraft fleet, a number of routines for operations, maintenance and storage are affected and new tasks and functions must be introduced before initiating the actual parting-out process. A decision-making system and a management framework is needed to manage spares planning during the end-of-life phase to ensure availability at minimum cost and to ensure a manageable risk of backorders.

For PBSP programme during the phase-out of an aircraft fleet to succeed and be cost-effective, a number of linked processes, tasks and decisions are required, e.g., those included in the framework proposed in this paper (see Figure 3). A successful implementation of PBSP also requires that these processes and tasks are carried out in a timely manner and that the communications between the concerned parties are prompt, clear and direct. One experience from the studied case is that close and trustful contacts and cooperation between the operator and maintenance provider(s) will greatly facilitate the process.

Although the PBSP method is fairly commonly applied within both the military and the civilian sector, somewhat surprisingly very literature has been published on the subject. Indeed, remarkably little has been published on any aspects of maintenance during the end-of-life period.

Selective inhibition of sintering (SIS) is a layered fabrication process which is capable of rapidly producing accurate functional parts out of polymers and metals using a relatively inexpensive machine. This article presents a brief overview of the research and development aimed at establishing the feasibility and the potential of the process.

Purpose – This chapter puts forth an approach for deeper understanding of the ways that information professionals learn, based on concepts and strategies that enable them to fulfill the varied roles they take on. It considers multiple facets in their experiences of using information to learn, the essence of informed learning (Bruce, 2008). The purpose of furthering this understanding is to develop approaches for designing enhanced curriculum to support transformative learning experiences.

Design & Methodology – To explore the learning experiences, roles, and strategies of information professionals, this chapter enlists two frameworks pertinent to transformative learning: first, the informed learning construct of Bruce (2008) and, second, the threshold concepts theoretical framework of Meyer and Land (2003). Both frameworks have been used to guide the design of curriculum, and this chapter discusses using them together to design higher education courses for information professionals. Learning activities from two courses in an online MLIS degree program – information retrieval system design and information architecture – are used as case illustrations for implementing a blended approach.

Findings & Discussion – The outcomes from implementing curriculum that has been designed based on informed learning principles and threshold concepts that were derived from learner experiences are discussed. A third construct, information experience (Bruce et al., 2014), which evolved in part out of informed learning, is brought into the discussion, providing an additional dimension for understanding the learner’s relationship with his/her information world.

The purpose of this paper is to investigate the effect of the main process parameters of laser melting (LM) type additive manufacturing (AM) on multi-layered structures manufactured from JSC-1A Lunar regolith (Moondust) simulant powder.

Laser diffraction technology was used to analyse and confirm the simulant powder material particle sizes and distribution. Geometrical shapes were then manufactured on a Realizer SLM™ 100 using the simulant powder. The laser-processed samples were analysed via scanning electron microscopy to evaluate surface and internal morphologies, X-ray fluorescence spectroscopy to analyse the chemical composition after processing, and the samples were mechanically investigated via Vickers micro-hardness testing.

A combination of process parameters resulting in an energy density value of 1.011 J/mm² allowed the successful production of components directly from Lunar regolith simulant. An internal relative porosity of 40.8 per cent, material hardness of 670 ± 11 HV and a dimensional accuracy of 99.8 per cent were observed in the fabricated samples.

This research paper is investigating the novel application of a powder bed fusion AM process category as a potential on-site manufacturing approach for manufacturing structures/components out of Lunar regolith (Moondust). It was shown that this AM process category has the capability to directly manufacture multi-layered parts out of Lunar regolith, which has potential applicability to future moon colonization.

Describes the design and analysis of a computer‐based information system for inventory management in a computer service company. Studies the existing manual system for possible adaptation and necessary modifications and identifies the requirements of the users and the components of the system. To facilitate control, the parts are classified into four categories. Various quantitative models for demand forecast, economic order quantity, and safety stock are considered, and for each part type, an appropriate set of models is used depending on the relative importance of its category. The information system so designed is implemented in a modular form. The database for this application is implemented in dBASE III PLUS while the control programs are written in CLIPPER tools. Extensive user interface is provided for user‐friendliness.

Process management is a managerial approach characterised by the focus on business processes that can provide an important contribution to the management of public sector organisations. The significance of this approach for the management of inter‐organisational relations in the public sector is highlighted. A model for the analysis of the factors enabling the implementation of process management in the public sector is proposed. The Italian experience of the one‐stop shops for businesses is studied; the relevance of process management approaches for the success of this reform is shown. Implications for public managers at all levels of government are discussed.

Whenever capitalism in the West appears to be dragging with unresolved problems, then quite a few people, including professional economists, begin to think that perhaps socialism is a better alternative. Conversely, in the East even a larger number of people, including economists (who are not activists), seriously believe that in view of their shortages and meagre incomes capitalism would be a better alternative.