Search results

1 – 10 of over 2000
Article
Publication date: 1 March 1985

D.G. Lovering

Insoluble residues may be formed for a number of reasons as a result of flux‐solder‐conductor reactions occurring during the crucial operation of soldering, in which both metals…

Abstract

Insoluble residues may be formed for a number of reasons as a result of flux‐solder‐conductor reactions occurring during the crucial operation of soldering, in which both metals and fluxes are molten and at elevated temperatures. The consequences can be serious, since corrosion of joints may be aggravated, coatings may not adhere or bridging between conductors may occur. One such residue, which was formed during defluxing of printed circuits with a commercial methanol‐fluorocarbon solvent, has been characterised in some detail. It appears to be a tin abiate complex which remains insoluble in most solvents except organic amides.

Details

Circuit World, vol. 11 no. 4
Type: Research Article
ISSN: 0305-6120

Article
Publication date: 1 July 1937

Variable‐pitch airscrews driven through multiple speed gear boxes are controlled by a single lever to provide in one position high speed and fine pitch and in another position a…

Abstract

Variable‐pitch airscrews driven through multiple speed gear boxes are controlled by a single lever to provide in one position high speed and fine pitch and in another position a lower speed and coarser pitch. The epicyclic gearing includes an annulus wheel B1 driven from the crankshaft and a series of double planet wheels B2 carried in a frame B3 rigid with an axial extension B4 of the airscrew hub A1. The series of planet gears mesh with sun wheels C, C2 respectively on sleeves C1 and C3 which are adapted to be clutched to the fixed casing D by clutches D1, D2 movable into position by a ring D3 which is actuated by a ring E, which through pivots and levers is movable by a piston K in a cylinder K1 which is coupled by pipes J3, G4 through a control valve H1 with a pressure supply. Branch pipes G3, J2 pass to compartments in the hollow shaft and thence to a cylinder F3 coupled to the blade roots for varying the pitch. The valve H1 is controlled from the cockpit through levers H2, H3.

Details

Aircraft Engineering and Aerospace Technology, vol. 9 no. 7
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 1 March 1990

K. Sherman and C.A. MacKay

Thermoanalytical spectra of the components of a typical rosin based flux and the interactions of the components with each other, the substrate and the solder are presented. The…

Abstract

Thermoanalytical spectra of the components of a typical rosin based flux and the interactions of the components with each other, the substrate and the solder are presented. The study includes heating rates up to those experienced in typical soldering operations.

Details

Soldering & Surface Mount Technology, vol. 2 no. 3
Type: Research Article
ISSN: 0954-0911

Article
Publication date: 1 April 1989

C. Lea

Visible surface residues, commonly referred to as white residues, on soldered printed circuit assemblies are a very common but intermittent and unpredictable problem. Such…

Abstract

Visible surface residues, commonly referred to as white residues, on soldered printed circuit assemblies are a very common but intermittent and unpredictable problem. Such residues, which are insoluble in normal solvents, are generally a rejectable condition. The chemistry of the deposition of white residues is complex; the deposits themselves are of a number of types and origins, and their incidence is associated with both materials and process parameters. This paper attempts to identify the different causes of the problem and suggest ways in which avoidance or removal is possible.

Details

Circuit World, vol. 16 no. 1
Type: Research Article
ISSN: 0305-6120

Book part
Publication date: 5 January 2016

Abstract

Details

Storytelling-Case Archetype Decoding and Assignment Manual (SCADAM)
Type: Book
ISBN: 978-1-78560-216-0

Book part
Publication date: 11 November 1994

E. Eide

Abstract

Details

Economics of Crime: Deterrence and the Rational Offender
Type: Book
ISBN: 978-0-44482-072-3

Open Access
Article
Publication date: 3 July 2023

Kaisa Aro, Kati Suomi and Richard Gyrd-Jones

This study aims to add to the understanding of the interactive nature of brand love by using a multilayer perspective that incorporates individual, group and societal contexts.

2800

Abstract

Purpose

This study aims to add to the understanding of the interactive nature of brand love by using a multilayer perspective that incorporates individual, group and societal contexts.

Design/methodology/approach

The qualitative empirical study uses abductive reasoning. Its theories and conclusions are grounded in naturally occurring data from an online brand community. The approach revealed new interactive processes of brand love.

Findings

This study extends our understanding of the interactive nature of brand love by adopting a layered perspective incorporating micro- (individual), meso- (in-group), macro- (in-group vs out-group) and mega-layer (societal) social dynamics that complements the predominant focus on individual psychological processes. It challenges the linear, monodirectional trajectory approach to brand love, suggesting that brand love is in constant flux as individuals move across the layers in their identification with the brand.

Research limitations/implications

This study provides data from one destination brand in Finland. Future studies could consider other types of brands and contexts in other countries and cultures.

Practical implications

This study shows brand managers that brand lovers can be divided into subgroups with distinct drivers of their love to which brand managers should attend.

Originality/value

To the best of the authors’ knowledge, this is the first attempt to describe the interactive nature of brand love through interactions between and within four layers of brand love. Furthermore, this study enhances our understanding of the contradictory aspects of brand love.

Details

European Journal of Marketing, vol. 57 no. 13
Type: Research Article
ISSN: 0309-0566

Keywords

Article
Publication date: 8 December 2017

Samwel Alananga Sanga

The purpose of this paper is to analyse the impact of title risks on property prices to establish the associated title risk-price premiums across property types and the moderating…

Abstract

Purpose

The purpose of this paper is to analyse the impact of title risks on property prices to establish the associated title risk-price premiums across property types and the moderating effect of occupation strategies for informal transactions.

Design/methodology/approach

Based on household survey data on transactions for 1,514 residential properties in Kinondoni Municipality, Tanzania, binomial logistic regression models were implemented to predict pre-purchase transaction risks. The results of which were used as inputs in mixed effect models to examine the effect of the predicted title risks on (2,010 constant) purchase price for three-bedrooms finished and unfinished housing units and 400 m2 plots.

Findings

Although legal titles have positive overall title risk-price premiums, such premiums hardly accrue from transactions involving finished houses and marginally accrue from vacant plots transactions. On average, unfinished housing purchasers are title risk-averse, “vacant plots” purchasers are title risk-neutral, while “finished housing” purchasers are title risk-lovers.

Research limitations/implications

The sample composition does not include developer-built housing units, the inclusion of which may sway results away from the observations of this study.

Practical implications

Titling alone can hardly be used as a property market stimuli (eliminate transaction risks) unless the market is dominated by unfinished houses.

Originality/value

Existing studies consider neither traded housing products nor pre-purchase transaction risks or consider only one of the two, thus leaving a gap in the literature for which this study sought to bridge. Researchers must incorporate both to arrive at a well-informed conclusion on the potential risks as well as prices achievable in each transaction.

Details

International Journal of Housing Markets and Analysis, vol. 11 no. 1
Type: Research Article
ISSN: 1753-8270

Keywords

Article
Publication date: 1 January 1951

WE all scan the advertisements for librarians in The Times Literary Supplement and other journals every week, and we might be forgiven for inferring from them that there is a…

Abstract

WE all scan the advertisements for librarians in The Times Literary Supplement and other journals every week, and we might be forgiven for inferring from them that there is a dearth of those who, by a curious inversion, are asked for as “A.L.A's or F.L.A's.” In contradiction, it would appear that about 1,500 youngsters are trying to enter the profession by way of the Entrance Examination every year. Youngsters beginning life, especially girls, do usually prefer or are constrained by their parents, the cost of living, and the scarcity of lodgings, to start in their home towns and still to live at home.. Higher in the scale the whole position is tangled in various ways. Many of the entrants fall by the way; commercial pay exceeds municipal and other library pay; more find the work uncongenial, as library work certainly is except to those who are book‐lovers, have a strong social sense, and, in the best cases, a flair for publicity and business administration. Others marry and leave, although some stay on with the ring on the third finger of their left hand. Thus, when maturity is reached, only a relatively few, even amongst the mature, have become chartered librarians and, fewer still, Fellows—as is natural seeing that the fellowship is a much more severe test nowadays and only much love and industry can achieve it. This position is even worse in some other branches of the municipal service; our salaries do not draw the best of the young folk permanently and many a Treasurer's office, to take one branch only, is complaining of want of good recruits. Those of our good ones who do remain do so because of the work and not the pay. Authority has always known this, from the day when Gladstone opined that working in the British Museum was so delightful that it was incredible that the workers wanted any pay at all. Chief librarians today have been most unfairly neglected by the salary negotiating bodies who have dealt generously with several other kinds of chief officers in the local services.

Details

New Library World, vol. 53 no. 13
Type: Research Article
ISSN: 0307-4803

Abstract

Details

Documents from the History of Economic Thought
Type: Book
ISBN: 978-0-7623-1423-2

1 – 10 of over 2000