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Three-dimensional (3D)printed skulls for neurosurgical training are increasingly being used due to the widespread access to 3D printing technology, their low cost and accuracy, as well as limitations and ethical concerns associated with using human cadavers. However, little is known about the risks of airborne particles or volatile organic compounds (VOCs) released while drilling into 3D-printed plastic models. The aim of this study is to assess the level of exposure to airborne contaminants while burr hole drilling.

3D-printed skull samples were produced using three different materials (polyethylene terephthalate glycol [PETG], white resin and Bone^STN) across three different 3D print processes (fused filament fabrication, stereolithography [SLA] and material jetting). A neurosurgeon performed extended burr hole drilling for 10 min on each sample. Spot measurements of particulate matter (PM2.5 and PM10) were recorded, and air samples were analysed for approximately 90 VOCs.

The particulate matter for PETG was found to be below the threshold value for respirable particles. However, the particulate matter for white resin and Bone^STN was found to be above the threshold value at PM10, which could be harmful for long periods of exposure without personal protective equipment (PPE). The VOC measurements for all materials were found to be below safety thresholds, and therefore not harmful.

To the best of the authors’ knowledge, this is the first study to evaluate the safety of 3D-printed materials for burr hole surgical drilling. It recommends PETG as a safe material requiring minimal respiratory control measures, whereas resin-based materials will require safety controls to deal with airborne particles.

This study aims to evaluate the color accuracy of HP Jet Fusion 580 3D printing, comparing 3D-printed outcomes against original digital input colors.

A custom cyan, magenta, yellow and black (CMYK) and red, green, blue (RGB) color chart was applied to the top, bottom and side surfaces of a 3D model. Four of each model were 3D-printed on a HP Jet Fusion 580, and half the samples were finished with a cyanoacrylate gloss surface finish, while half were left in raw form. A spectrophotometer was used to document CIELAB (L*a*b*) data, and comparisons made to the original input colors, including calculation of ΔE.

The CMYK samples were significantly more accurate than RGB samples, and grayscale samples in both color spaces were the most accurate of all. Typically, CMYK swatches were darker than the input values, and gloss samples were consistently darker than raw samples. The chromaticity (a*b*) range was found to be significantly smaller than what can be achieved digitally, with highly saturated colors unable to be produced by the printer.

This is the first study, to the best of the authors’ knowledge, to characterize the full color spectrum possible with the HP Jet Fusion 580, recommending that designers use the CMYK color space when applying colors and textures to 3D models. A quick-reference color chart has been provided; however, it is recommended that future research focus on developing a color management profile to better map digital colors to the capabilities of the printer.

Legal process by its very nature cannot be swift; step by step, it must be steady and sure and this takes time. There is no room for hasty decisions for these would tend to defeat its purpose. Time, however, is of the essence and this is set for various aspects of legal action by limitation of actions legislation, which sets periods after which the case is no longer actionable. The periods are adequate and in civil law, generous to avoid injustice being done. The one serious complaint against the process of law, however, is the unwarrantable delays which are possible despite limitation. From the far‐off days of Equity, when Dickens' Jarndyce v Jarndyce, caricatured and exaggerated as it was, described the scene down to the present when delays, often spoken of in Court as outrageous are encountered, to say nothing of the crowded lists in the High Courts and Crown Courts; the result of the state of society and not the fault of the judiciary. Early in 1980, it was reported that 14,500 cases were awaiting trial in the Southeastern Circuit Crown Court alone. Outside the Courts legal work hangs on, to the annoyance of those concerned; from house purchase to probate. Here, the solicitor is very much his own master, unhampered by statutory time limits and the only recourse a client has is to change this solicitor, with no certainty that there will be any improvement, or appeal to the Law Society.

Special collections, because of their very nature, need special consideration by library management. Discusses one part of special collection management which needs particular consideration, namely printed ephemera. This will perhaps be the greatest problem for local studies departments of public libraries; special libraries, because of their identification with their parent body, and its aims and objectives, do not have quite the same problems. However, all libraries concerned with acquiring printed ephemera need to consider certain aspects of the management of this material. Outlines some of these problems and issues, and briefly suggests possible courses of action which can be taken, based on current research into developing a collection policy for printed Welsh ephemera, carried out at the Department of Information and Library Studies at the University College of Wales, Aberystwyth in conjunction with the National Library of Wales.

This paper seeks to introduce a set of key practices that can be used to assess whether an organization has the ability to design, develop and manufacture reliable electronic products.

The ability to design, develop and manufacture reliable electronic products is defined in the paper in terms of a reliability capability maturity model, which is a measure of the practices within an organization that contribute to the reliability of the final product, and the effectiveness of these practices in meeting the reliability requirements of customers.

The paper presents a procedure for evaluating and benchmarking reliability capability. Criteria for assigning different capability maturity levels are presented. The paper also presents a case study corresponding to reliability capability benchmarking of an electronics company.

The paper provides a set of practices for evaluating and benchmarking reliability capability.

CD‐ROM was first demonstrated in the United States in November 1984. Since then many organizations, including agencies of the Federal government, have embraced the technology, and an increasingly large and diverse product base is emerging. In March 1986, Microsoft Corporation sponsored a major conference on the topic, which was attended by almost 1000 persons. The registration fee of $900 precluded most librarians from attending. David Miller provides a thorough report on the conference, and a complete directory of participants, for the benefit of those who could not attend.

The position of these Irish agitators is illogical and untenable; the remedy they propose is no remedy at all – nevertheless they are talking about the tenure of land and the right to land; and thus a question of worldwide importance is coming to the front.³

Blended learning is an emerging trend across many educational settings, adopting the purposeful integration of traditional face-to-face and online teaching to establishing an engaging learning experience for the students. Blended learning provides an ideal platform for the implementation of reusable learning objects (RLOs) as a pedagogical tool to support classroom instruction.

This study had conducted a quasi-experiment followed by semi-structured interviews to determine if a blended learning approach using RLOs can enhance students’ learning in an undergraduate engineering computer-aided design (CAD) module. This study involved learners studying engineering in two different academic years.

Students from the first year were taught using traditional face-to-face teaching approach. The cohort of students from the subsequent year adopted a blended learning approach: face to face and access to a series of RLOs. The analysis revealed statistical evidence that the use of blended learning had a significant impact on the students' end of term exam grades in the CAD module in comparison to the students who undertook traditional face-to-face teaching approach. The qualitative findings highlighted the positive impact of RLOs on students’ learning behaviour, engagement and knowledge retention.

This study provided empirical evidence of the benefits of using RLOs as a blended learning tool in engineering domain. From a theoretical perspective, the findings highlighted the importance of good instructional design and sound theoretical underpinning of the pedagogical strategy. From a practical point of view, this study informed academics on how to improve learner's academic achievement using RLOs.

Rather than organize as traditional firms, many of today’s companies organize as platforms that sit at the nexus of multiple exchange and production relationships. This chapter considers a most basic question of organization in platform contexts: the choice of boundaries. Herein, I investigate how classical economic theories of firm boundaries apply to platform-based organization and empirically study how executives made boundary choices in response to changing market and technical challenges in the early mobile computing industry (the predecessor to today’s smartphones). Rather than a strict or unavoidable tradeoff between “openness-versus-control,” most successful platform owners chose their boundaries in a way to simultaneously open-up to outside developers while maintaining coordination across the entire system.

Children in Malaysia, just as children in many other countries, are vulnerable to poverty. They are exposed to different forms of deprivation and the COVID-19 pandemic exacerbated their predicament. Concerns have been raised about the impact of the pandemic on children’s well-being, as this health crisis had intensified the educational and economic disparities among children in Malaysia, and for some children the impact will be lifelong. It is important to recognise the multidimensionality of poverty in regard to deprivation among poor children; however, such concerns are less pronounced in public policy discussions. Demands for greater policy attention intensified following the increasing number of unemployed parents and bereaved children who lost their parents due to the pandemic. The scope of poverty alleviation policies failed to consider the varying poverty gaps between recipients and the various forms of deprivation experienced by children in poor and larger sized households. As a result, the allocation of funds for the improvement of children’s well-being has been insignificant. The aim of this chapter is to provide a thorough overview of child poverty in developed and developing countries and how child poverty has changed in Malaysia. The analysis in this chapter seeks to provide deep insights on the development of policies that address poverty among children in Malaysia. An analysis on budget appropriations reveals that efforts to address other dimensions of child development were steadily improved, but policy commitments for such purposes need to be intensified in the post-pandemic era when hundreds of thousands of families and children have been plunged into poverty. It is timely for policymakers to acknowledge the need for separate policy considerations for children since they experience poverty differently from adults. The fulfilment of their needs should be prioritised, and the recognition of this fact would produce desirable plans of action for children living in poverty.