Ji Li, Thomas Wasley, Duong Ta, John Shephard, Jonathan Stringer, Patrick J. Smith, Emre Esenturk, Colm Connaughton, Russell Harris and Robert Kay
This paper aims to demonstrate the improved functionality of additive manufacturing technology provided by combining multiple processes for the fabrication of packaged electronics.
Abstract
Purpose
This paper aims to demonstrate the improved functionality of additive manufacturing technology provided by combining multiple processes for the fabrication of packaged electronics.
Design/methodology/approach
This research is focused on the improvement in resolution of conductor deposition methods through experimentation with build parameters. Material dispensing with two different low temperature curing isotropic conductive adhesive materials was characterised for their application in printing each of three different conductor designs, traces, z-axis connections and fine pitch flip chip interconnects. Once optimised, demonstrator size can be minimised within the limitations of the chosen processes and materials.
Findings
The proposed method of printing z-axis through layer connections was successful with pillars 2 mm in height and 550 µm in width produced. Dispensing characterisation also resulted in tracks 134 µm in width and 38 µm in height allowing surface mount assembly of 0603 components and thin-shrink small outline packaged integrated circuits. Small 149-µm flip chip interconnects deposited at a 457-µm pitch have also been used for packaging silicon bare die.
Originality/value
This paper presents an improved multifunctional additive manufacturing method to produce fully packaged multilayer electronic systems. It discusses the development of new 3D printed, through layer z-axis connections and the use of a single electrically conductive adhesive material to produce all conductors. This facilitates the surface mount assembly of components directly onto these conductors before stereolithography is used to fully package multiple layers of circuitry in a photopolymer.
Details
Keywords
The purpose of this paper is to provide a commentary on Shephard's narrative account of one person's experience of Positive Behaviour Support (PBS).
Abstract
Purpose
The purpose of this paper is to provide a commentary on Shephard's narrative account of one person's experience of Positive Behaviour Support (PBS).
Design/methodology/approach
This paper reflects on Shephard's account in the context of the burgeoning literature concerning the effectiveness of PBS and the author's own experiences.
Findings
Practitioners of PBS should consider narrative accounts as legitimate data.
Originality/value
This commentary welcomes the move toward the inclusion of narrative, or ethnographic, perspectives when evaluating PBS.
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Keywords
By diversifying its business to the global commercial market from domestic defense, Newport News Shipbuilding is repositioning for long‐term growth.
The following definitions and standards for food products have been adopted as a guide for the officials of this Department in enforcing the Food and Drugs Act. These are…
Abstract
The following definitions and standards for food products have been adopted as a guide for the officials of this Department in enforcing the Food and Drugs Act. These are standards of identity and are not to be confused with standards of quality or grade; they are so framed as to exclude substances not mentioned in the definition and in each instance imply that the product is clean and sound. These definitions and standards include those published in S. R. A., F. D. 2, revision 4, and those adopted October 28, 1936.
The purpose of this paper is to provide a narrative account of one person's experience of Positive Behaviour Support, against a backdrop of serial placement breakdowns.
Abstract
Purpose
The purpose of this paper is to provide a narrative account of one person's experience of Positive Behaviour Support, against a backdrop of serial placement breakdowns.
Design/methodology/approach
The paper reflects on the human stories that lie behind the evidence base and presents one such story.
Findings
The paper proposes that such stories are as important as the evidence that is gathered around them, and have the power to challenge and to inspire.
Originality/value
This paper is celebratory, rather than analytic. It presents a life being lived and attempts to capture the virtues of its ordinariness.
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Keywords
Julia M. Rholes and Jean Kellough
On 13 July 1974, President Nixon signed a proclamation declaring the week of 20 July National Space Week, in honor of man's landing on the moon on 20 July 1969. Although the lunar…
Abstract
On 13 July 1974, President Nixon signed a proclamation declaring the week of 20 July National Space Week, in honor of man's landing on the moon on 20 July 1969. Although the lunar landing was certainly the emotional high point for the American space program, interest in space remains quite high, as evidenced by the tremendous popularity of films and books on the subject. The intention of this article is to provide readers with a guide to materials that serve to focus attention on space exploration, not only during Space Week, but throughout the year.
People with challenging behaviour are commonly referred to the National Health Service for assistance and support. Good clinical practice would indicate that such interventions…
Abstract
People with challenging behaviour are commonly referred to the National Health Service for assistance and support. Good clinical practice would indicate that such interventions should be routinely monitored and evaluated in order to be maximally effective. Challenging behaviour has many impacts and, while monitoring frequency, duration and severity of behaviour is fundamental, equally key is attention to monitoring the impacts on the quality of life of the individual and those with whom they share their environments. Such outcomes are unlikely to be represented by one instrument, and a battery of measures currently holds most promise in relation to representation of what would be considered valid acceptable outcomes.