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The purpose of this paper is to investigate the combination of selective laser melting (SLM) and 5-axis CNC milling to produce parts from titanium powder. The aim is to achieve a more resource-efficient manufacturing process by reducing material wastage and machining time, while adhering to quality requirements.

A benchmark titanium aerospace component is manufactured with two different approaches using subtractive and additive manufacturing technologies. The first component is produced from a solid billet using only 5-axis CNC milling. The second component is grown from powder using SLM to produce a net-shaped part of which the final shape and part accuracy are achieved through 5-axis CNC milling. The potential saving of material and machining time of the process combination is evaluated by comparing it to the conventional purely CNC approach. The form accuracy, surface finish, mechanical properties and tool wear for the two processes are also compared.

The results show that the process combination can be used to produce Ti components that adhere to aerospace standards. With the process combination, a material saving of 87 per cent was achieved along with a reduction of 21 per cent in machining time. Further improvements are possible using optimized SLM build and machining strategies.

This paper presents the results of a resource efficiency assessment on the combination of SLM and 5-axis CNC milling for the titanium alloy, Ti6Al4V. It is expected that this process combination can make a significant contribution towards reducing material wastage and machining time for aerospace applications.

The main aim of the paper is the application of the selective laser sintering (SLS) method for fabrication of hydrodynamic torque converter (HTC) impellers.

Establishing of assumptions for the impeller design process based on the HTC characteristics analysis, creation of the virtual solid model of HTC impellers, fabrication of HTC impellers by using the SLS method, investigation of the performance of HTC with fabricated impellers by using a test rig.

The test results show that the SLS method can be successfully used for the fabrication of HTC impellers with 3D and flat blades.

The method application is limited to small diameters of HTC impellers depending on working area dimensions of SLS machine.

The method can decrease the time and cost of fabrication of HTC impellers by using the SLS method.

The application of the SLS method for fabrication of HTC impellers with 3D and flat blades.

This study aims to examine the imagining of libraries and the depiction of library services in contemporary science fiction novels. Analyses of libraries in contemporary science fiction may reveal expectations of libraries and the roles they play in future societies. These may, in turn, be used by the library profession to innovate and to discover opportunities to design and improve library services that meet the expectations of library users now and in the future.

This research applied a content analysis approach to examine references to libraries in a purposeful sample of science fiction novels published between 2009 and 2019. The sample consists of 29 novels selected from the 2010–2020 winners of the Hugo Award for Best Novel, The Nebula Award for Best Novel, the Locus Award for Best Science Fiction Novel, The Philip K Dick Award and the Arthur C Clarke Award.

This research finds that libraries are a common feature within contemporary science fiction novels, primarily as part of the background setting of the narratives. Libraries are particularly common in peri-apocalyptic novels, often as “reinvented” libraries. This research identifies considerable differences in the way libraries and information access and use are depicted and documented in science fiction worlds of plenty, compared to those of scarcity. Other key themes discussed include freedom of access to information, and the supposedly common negative stereotyping of libraries.

Existing literature indicates anxiety about the future of libraries which the findings of this research do not support. The insights gained suggested instead, the emergence of an image of libraries as being embedded in the fabric of societies. This indicates the expectation of the place and role of libraries in contemporary societies. Libraries and their services must be adeptly placed and woven into the many facets of the societies they serve.

This paper aims to focus on collaborative consumption, that is, the peer-to-peer (P2P) exchange of goods and services facilitated by online platforms. Anchored in the access paradigm, collaborative consumption (e.g. accommodation rental and ridesharing services) differs from commercial services offered by firms (e.g. business-to-customer [B2C] carsharing). The aim of this study is to examine the nuanced styles of collaborative consumption in relation to market-mediated access practices and socially mediated sharing practices.

Following the general research trend on mobility services, the context of long-distance ridesharing is chosen. Data collection was conducted using participant observation as peer service provider, 11 ethnographic interviews of consumers and a netnographic study of digital artifacts.

Using practice theory, ten ridesharing activities were identified. These activities and the nuances in the procedures, understandings and engagements in the ridesharing practice led to the distinction of three styles of collaborative consumption: communal collaborative consumption, which is when participants seek pro-social relationships in belonging to a community; consumerist collaborative consumption, performed by participants who seek status and convenience in the access lifestyle; and opportunistic collaborative consumption, when participants seek to achieve monetary gain or personal benefits from abusive activities.

By taking a phenomenological approach on collaborative consumption, this study adds to the understanding of the sharing economy as embedded in both a utilitarian/commercial economic system and a non-market/communal social system. The three styles of collaborative consumption propose a framework for future studies differentiating P2P exchanges from other practices (i.e. B2C access-based services and sharing).

Almost all libraries collect fiction. Of course the nature, scope, and organization of the collection varies with the type of library and its clientele. In this column scholars, fans, and just plain readers of diverse fiction formats, types, and genres will explore their specialty with a view to the collection building needs of various types of libraries. In addition to lists of “good reads,” authors not to be missed, rising stars, and rediscovered geniuses, columnists will cover major critics, bibliographies, relevant journals and organizations, publishers, and trends. Each column will include a genre overview, a discussion of access to published works, and a core collection of recommended books and authors. Janice M. Bogstad leads off with a discussion of science fiction. In the next issue of Collection Building, Ian will focus her discussion on the growing body of feminist science fiction with an article entitled, “Redressing an Interval Balance: Women and Science Fiction, 1965–1983.” Issues to follow will feature Kathleen Heim on thrillers, and Rhea Rubin reviewing short story collection building. Should you care to suggest an area or aspect of fiction collection building for discussion or try your hand as a columnist contact the column editor through Neal‐Schuman Publishers.

Introduction Hastily, I beat the editor to it by writing “These are the personal views of the author, and do not necessarily represent the views of the editor of this journal.” Indeed, I take it further. The article does not necessarily, in general manner or particular phrase, represent the views of the National Committee of National Library Week. It's a great disappointment to me that to date neither the National Committee nor myself has had to disown the other. Our opinions, to date, coincide on all salient points. No blows have been exchanged between Committee and Organiser. Since concord should often be more rightly spelt “c‐o‐m‐p‐l‐a‐c‐e‐n‐c‐y”, I regret this. All, however, may yet be well. My full views as Organiser of NLW 1969 follow: I shall state them with the most forthright candour and the most furious conviction; and the fisticuffs may well follow, as sure as Library fines. If the editor considers this preamble, too … well, too ambling … I proffer one excuse. As organiser, I'm as over‐worked and time‐pressed as any librarian, and my defence is therefore borrowed from Flaubert: “Forgive a long letter—I had no time to write a short one.” (Reference librarians, please check this quotation. I'm too busy.) Finally, there are those who write very lightly when they wish to state their most serious belief. Into this maladjusted and misjudged fraternity, I was myself born.

Discusses principles of equality and justice in order to justify affirmative action and clarify its need. Posits that in both the USA and South Africa, issues of segregation and discrimination are not new and both countries have had the opportunity to address their past policies by way of affirmative action programmes. Looks at what determined the denouncement of the affirmative action in the USA and why the answer to this question may have a great impact on South Africa’s attempt to improve its own affirmative action programmes. Concludes that, although 30 years of affirmative action was deemed unconstitutional, how can South Africa derive and make use of the knowledge gained to help in stopping reverse discrimination.

The following bibliography focuses mainly on programs which can run on IBM microcomputers and compatibles under the operating system PC DOS/MS DOS, and which can be used in online information and documentation work. They fall into the following categories:

The purpose of this paper is to record the author’s personal reflections on his career as a marketing scholar.

Personal reflections in an autobiographical approach.

The author’s career as student, teacher and scholar is described in some detail.

The paper records events and memories that might otherwise be forgotten. No other such account has been published of Christian Grönroos’s career.

Some misconception appears to have arisen in respect to the meaning of Section 11 of the Food and Drugs Act, 1899, owing, doubtless, to the faulty punctuation of certain copies of the Act, and the Sanitary Record has done good service by calling attention to the matter. The trouble has clearly been caused by the insertion of a comma after the word “condensed” in certain copies of the Act, and the non‐insertion of this comma in other copies. The words of the section, as printed by the Sanitary Record, are as follows: “Every tin or other receptacle containing condensed, separated or skimmed milk must bear a label clearly visible to the purchaser on which the words ‘Machine‐skimmed Milk,’ or ‘Skimmed Milk,’ as the case may require, are printed in large and legible type.”