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Book part
Publication date: 25 April 2014

Sara Delamont and Paul Atkinson

A great deal of contemporary research in education, and in the social sciences more generally, is conducted through interviews. Interview-derived accounts and narratives…

Abstract

A great deal of contemporary research in education, and in the social sciences more generally, is conducted through interviews. Interview-derived accounts and narratives have been used as data for many decades. We argue that, despite their popularity and their long history, such data are not always subjected to rigorous analysis. Researchers too often treat interviews as sources of insight about informants’ experiences and feelings, but pay insufficient attention to the forms and functions of such accounts. We argue that they need to be approached through the analytic lens of accounting devices and narrative structures. We exemplify this approach through ‘academic’ narratives: scientists’ discovery accounts and accounts of doctoral supervision. We emphasise how such accounts need to be examined in terms of the discursive construction of reality. Such an approach is an important corrective to the selective reporting of ‘atrocity stories’ about postgraduate education.

Details

Theory and Method in Higher Education Research II
Type: Book
ISBN: 978-1-78350-823-5

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Article
Publication date: 1 February 1992

L. Golonka, J. Kozlowski, B.W. Licznerski, K. Nitsch and A. Seweryn

This paper presents experimental data associated with the properties of thick film thermistors based on a spinel‐type semiconducting oxide/RuO2/glass system. The following…

Abstract

This paper presents experimental data associated with the properties of thick film thermistors based on a spinel‐type semiconducting oxide/RuO2/glass system. The following parameters—sheet resistivity, thermistor (B) and thermal time (?) constants—have been measured, all as functions of different composition and construction variants. The thermistor properties are independent of configuration and are mainly determined by the semiconducting oxide particle chains. The correlation between B and ? for the compositions considered has been observed.

Details

Microelectronics International, vol. 9 no. 2
Type: Research Article
ISSN: 1356-5362

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Article
Publication date: 10 August 2015

Filippo Berto and Alberto Campagnolo

Accordingly to the recent multi-scale model proposed by Sih and Tang, different orders of stress singularities are related to different material dependent boundary…

Abstract

Purpose

Accordingly to the recent multi-scale model proposed by Sih and Tang, different orders of stress singularities are related to different material dependent boundary conditions associated with the interaction between the V-notch tip and the material under the remotely applied loading conditions. This induces complex three-dimensional stress and displacement fields in the proximity of the notch tip, which are worthy of investigation. The paper aims to discuss these issues.

Design/methodology/approach

Starting from Sih and Tang’s model, in the present contribution the authors propose some analytical expressions for the calculation of the strain energy density (SED) averaged over a control volume embracing the V-notch tip. The expressions vary as a function of the different boundary conditions. Dealing with the specific crack case, the results from the analytical frame are compared with those determined numerically under linear-elastic hypotheses, by applying different constraints to the through-the-thickness crack edges in three-dimensional discs subjected to Mode III loading. Free-free and free-clamped cases are considered.

Findings

Due to three-dimensional effects, the application of a nominal Mode III loading condition automatically provokes coupled Modes (I and II). Not only the intensity of the induced modes but also their degree of singularity depend on the applied conditions on the crack flanks. The variability of local SED through the thickness of the disc is analysed by numerical analyses and compared with the theoretical trend.

Originality/value

The capability of the SED to capture the combined three-dimensional effects is discussed in detail showing that this parameter is particularly useful when the definition of the stress intensity factors (SIFs) is ambiguous or the direct comparison between SIFs with odd dimensionalities is not possible.

Details

International Journal of Structural Integrity, vol. 6 no. 4
Type: Research Article
ISSN: 1757-9864

Keywords

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Article
Publication date: 1 January 1992

J. Atkinson, K. Pitt and K. Williams

ISHM, acting as a professional body for a very large sector of microelectronics manufacturing and design, naturally takes a strong and active interest in the education and…

Abstract

ISHM, acting as a professional body for a very large sector of microelectronics manufacturing and design, naturally takes a strong and active interest in the education and training of people working in its industry. An annual Education Prize is awarded by the Society at either undergraduate or post‐graduate level and sometimes both. The aim of the awards is to encourage the writing up of work completed by students as part of the education route. It may be from an internal project such as a B.Eng. report or a Masters Dissertation. It may also be work done by the student in an industrial placement. These three authors or their institutions have been associated with entries which have been awarded a prize. The winning paper is normally published in Hybrid Circuits.

Details

Microelectronics International, vol. 9 no. 1
Type: Research Article
ISSN: 1356-5362

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Article
Publication date: 19 October 2018

Karol Seweryn and Jurek Z. Sasiadek

This paper aims to present a novel method for identification and classification of rotational motion for uncontrolled satellites. These processes are shown in context of…

Abstract

Purpose

This paper aims to present a novel method for identification and classification of rotational motion for uncontrolled satellites. These processes are shown in context of close proximity orbital operations. In particular, it includes a manipulator arm mounted on chaser satellite and used to capture target satellites. In such situations, a precise extrapolation of the target’s docking port position is needed to determine the manipulator arm motion. The outcome of this analysis might be used in future debris removal or servicing space missions.

Design/methodology/approach

Nonlinear, and in some special cases, chaotic nature of satellite rotational motion was considered. Four parameters were defined: range of motion toward docking port, dominant frequencies, fractal dimension of the motion and its time dependencies.

Findings

The qualitative analysis was performed for presented cases of spacecraft rotational motion and for each case the respective parameters were calculated. The analysis shows that it is possible to detect the type of rotational motion.

Originality/value

A novel procedure allowing to estimate the type of satellite rotational motion based on fractal approach was proposed.

Details

Aircraft Engineering and Aerospace Technology, vol. 91 no. 2
Type: Research Article
ISSN: 1748-8842

Keywords

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Article
Publication date: 3 June 2014

Seweryn Spalek

There is a significant knowledge gap in the common understanding regarding the value that investment leading to an increase in project management maturity brings to the…

Abstract

Purpose

There is a significant knowledge gap in the common understanding regarding the value that investment leading to an increase in project management maturity brings to the organisation. The purpose of this paper is to narrow this gap by investigating the relationship between an increase in the project management maturity level and the project's performance. Additionally, it advocates the investment roadmap approach.

Design/methodology/approach

This study is part of a worldwide research initiative into maturity in project management covering 447 global companies. For this purpose, survey data from experts from 194 select companies was analysed.

Findings

The cost of forthcoming projects depends on the level of maturity of project management and type of industry.

Research limitations/implications

The study is limited to three different industries (machinery, construction and information technology) and by the method of assessing their future project costs. New research directions are suggested.

Practical implications

The results of the study should help companies in allocating limited resources appropriately using the proposed roadmap.

Social implications

An increase in project management maturity can be achieved through different investment methods. This will benefit society as well.

Originality/value

The paper focuses on global companies dealing in machinery. The area has not been explored sufficiently from the project management perspective. It discusses the relationship between an increase in maturity and future project costs in three industries: machinery, construction and information technology. The paper suggests practical guidelines for project management and sequences in proper investments when resources are limited.

Details

Industrial Management & Data Systems, vol. 114 no. 5
Type: Research Article
ISSN: 0263-5577

Keywords

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Article
Publication date: 1 May 1991

Abu F. Dowlah and John E. Elliott

Gorbachev′s vision of democratic, decentralised and market‐orientedsocialism has generated diverse and controversial perceptions in theSoviet Union. Gorbachev′s claim that…

Abstract

Gorbachev′s vision of democratic, decentralised and market‐oriented socialism has generated diverse and controversial perceptions in the Soviet Union. Gorbachev′s claim that the USSR is not retreating from socialism but advancing towards it, having dismantled the Stalinist Command model, is assessed.

Details

International Journal of Social Economics, vol. 18 no. 5/6/7
Type: Research Article
ISSN: 0306-8293

Keywords

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Article
Publication date: 1 March 1967

All items listed may be borrowed from the Aslib Library, except those marked, which may be consulted in the Library.

Abstract

All items listed may be borrowed from the Aslib Library, except those marked, which may be consulted in the Library.

Details

Aslib Proceedings, vol. 19 no. 3
Type: Research Article
ISSN: 0001-253X

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Article
Publication date: 22 March 2021

Dongmin Li, Guofang Ma and Jia Li

It is essential to level the drilling platform across which a drilling robot travels in a slant underground coal mine tunnel to ensure smooth operation of the drill rod…

Abstract

Purpose

It is essential to level the drilling platform across which a drilling robot travels in a slant underground coal mine tunnel to ensure smooth operation of the drill rod. However, existing leveling methods do not provide dynamic performance under the drilling conditions of the underground coal mine. A four-point dynamic leveling algorithm is presented in this paper based on the platform attitude and support rod displacement (DLAAD). An experimental drilling robot demonstrates its dynamic leveling capability and ability to ensure smooth drill rod operations.

Design/methodology/approach

The attitude coordinate of the drilling robot is established according to its structure. A six-axis combined sensor is adopted to detect the platform attitude, thus revealing the three-axis Euler angles. The support rod displacement values are continuously detected by laser displacement sensors to obtain the displacement increment of each support rod as needed. The drilling robot is leveled according to the current support rod displacement and three-dimensional (3 D) attitude detected by the six-axis combined sensor dynamically.

Findings

Experimental results indicate that the DLAAD algorithm is correct and effectively levels the drilling platform dynamically. It can thus provide essential support in resolving drill rod sticking problems during actual underground coal mine drilling operations.

Practical implications

The DLAAD algorithm supports smooth drill rod operations in underground coal mines, which greatly enhances safety, reduces power consumption, and minimizes cost. The approach proposed here thus represents considerable benefits in terms of coal mine production and shows notable potential for application in similar fields.

Originality/value

The novel DLAAD algorithm and leveling control method are the key contributions of this work, they provide dynamical 3 D leveling and help to resolve drill rod sticking problems.

Details

Assembly Automation, vol. 41 no. 2
Type: Research Article
ISSN: 0144-5154

Keywords

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Article
Publication date: 3 October 2016

Xiaogang Wang, Wutao Qin, Yuliang Bai and Naigang Cui

Penetrator plays an important role in the exploration of Moon and Mars. The navigation method is a key technology during the development of penetrator. To meet the high…

Abstract

Purpose

Penetrator plays an important role in the exploration of Moon and Mars. The navigation method is a key technology during the development of penetrator. To meet the high accuracy requirements of Moon penetrator, this paper aims to propose two kinds of navigation systems.

Design/methodology/approach

The line of sight of vision sensor between the penetrator and Moon orbiter could be utilized as the measurement during the navigation system design. However, the analysis of observability shows that the navigation system cannot estimate the position and velocity of penetrator, when the line of sight measurement is the only resource of information. Therefore, the Doppler measurement due to the relative motion between penetrator and the orbiter is used as the supplement. The other option is the relative range measurement between penetrator and the orbiter. The sigma-point Kalman Filtering is implemented to fuse the information from the vision sensor and Doppler or rangefinder. The observability of two navigation system is analyzed.

Findings

The sigma-point Kalman filtering could be used based on vision sensor and Doppler radar or laser rangefinder to give an accurate estimation of Moon penetrator position and velocity without increasing the payload of Moon penetrator or decreasing the estimation accuracy. However, the simulation result shows that the last method is better. The observability analysis also proves this conclusion.

Practical implications

Two navigation systems are proposed, and the simulations show that both systems can provide accurate estimation of states of penetrator.

Originality/value

Two navigation methods are proposed, and the observability of these navigation systems is analyzed. The sigma-point Kalman filtering is first introduced to the vision-based navigation system for Moon penetrator to provide precision navigation during the descent phase of Moon penetrator.

Details

Aircraft Engineering and Aerospace Technology, vol. 88 no. 6
Type: Research Article
ISSN: 1748-8842

Keywords

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