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1 – 10 of 248
Article
Publication date: 1 May 1975

APPLIED Technology, Middle East and European marketing and technical support representative of PF Industries Inc, will exhibit ground support equipment supplied to airlines…

Abstract

APPLIED Technology, Middle East and European marketing and technical support representative of PF Industries Inc, will exhibit ground support equipment supplied to airlines worldwide.

Details

Aircraft Engineering and Aerospace Technology, vol. 47 no. 5
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 1 March 2000

Don Braggins

Summarises the presentations made at the UK Industrial Vision Association’s annual general meeting in September 1999, Nottiungham, UK, entitled “Innovations in illumination for…

Abstract

Summarises the presentations made at the UK Industrial Vision Association’s annual general meeting in September 1999, Nottiungham, UK, entitled “Innovations in illumination for machine vision”.

Details

Sensor Review, vol. 20 no. 1
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 30 July 2010

Yi Li, Nan Zhou and Youhe Si

The purpose of this paper is to explore the impact of a firm's innovation activities on performance, and focus on the internal fit and external fit of two types of innovation…

2248

Abstract

Purpose

The purpose of this paper is to explore the impact of a firm's innovation activities on performance, and focus on the internal fit and external fit of two types of innovation activities – exploratory innovation and exploitative innovation.

Design/methodology/approach

The paper adopts the survey data of 397 enterprises in eastern, middle, and western China. The business strategy attributes analysis based on strategic orientation of business enterprises (STROBE) scale was used to classify the business strategy types, and hierarchical regression analyses were employed to test the hypotheses.

Findings

The results show: both exploratory innovation and exploitative innovation have a positive effect on firm performance; the internal fit between exploratory innovation and exploitative innovation, whether it is fit as moderating or fit as matching, has no significant effect on firm performance; the fit between innovation activity and firm business strategy has significant effect on firm performance, therefore, exploratory innovation activity fits defenders and exploitative innovation activity fits prospectors; and the fit between the innovation activity and external environment has a slight effect on firm performance. Environmental competitiveness can enhance exploratory innovation outcome but diminish exploitative innovation outcome.

Originality/value

The paper has supplied the empirical evidence discovered in the context of China to the theoretical views of exploratory innovation and exploitative innovation, and achieved some results which differ from the ones drawn by similar researches done abroad.

Details

Nankai Business Review International, vol. 1 no. 3
Type: Research Article
ISSN: 2040-8749

Keywords

Article
Publication date: 1 August 2001

Stephen M. Parkes

SpaceWire is a network designed for handling payload data and control information on‐board a spacecraft. It provides a unified, high‐speed, data‐handling infrastructure for…

Abstract

SpaceWire is a network designed for handling payload data and control information on‐board a spacecraft. It provides a unified, high‐speed, data‐handling infrastructure for connecting together sensors (e.g. optical or radar instruments), processing elements (e.g. digital signal processors), mass‐memory units, downlink telemetry sub‐systems and ground support equipment (GSE). SpaceWire is intended to meet the needs of future, high‐capability space missions. It supports equipment compatibility and re‐use at both the component and sub‐system levels. This paper first considers the key factors that drove the specification of SpaceWire, explaining the particular demands imposed by the space environment. The components of a SpaceWire network are then introduced. The key features of SpaceWire are summarised and the support that SpaceWire provides for fault tolerance is described. Finally a summary is given of the current status of the SpaceWire standard and its application in space missions.

Details

Aircraft Engineering and Aerospace Technology, vol. 73 no. 4
Type: Research Article
ISSN: 0002-2667

Keywords

Article
Publication date: 24 June 2020

Jorge Alejandro Silva and María Antonieta Andrade

The purpose of this paper is to analyse how solar energy is harnessed and implemented in Mexico. This paper presents a diachronic analysis of the divergent literature presented…

Abstract

Purpose

The purpose of this paper is to analyse how solar energy is harnessed and implemented in Mexico. This paper presents a diachronic analysis of the divergent literature presented into the subject with the themes being divided substantially.

Design/methodology/approach

This paper used at least five methods in the identification of the studies with the first being the use of the SCImago Institution Ranking followed by the use of Scopus for journal evaluation. SCImago was used to determine the efficiency of the journals with the Newcastle Ottawa scale allowing for the evaluation of the different case study articles presented on Mexico. The fourth tool was a 21-item STROBE checklist after which the Web of Science was used to determine the authenticity levels of the identified articles.

Findings

The implementation of solar energy technologies is still novel in Mexico with private and public entities working together towards building sustainable options. In addition, it cites the divergent merits that might stem from the use of solar energy technologies.

Originality/value

A myriad of articles has been presented concerning solar energy in Mexico, but no attempt has been made to synthesize the evidence and arguments made in this significant body of research. The subsequent review is original with its findings being valuable for current and future research.

Details

International Journal of Energy Sector Management, vol. 14 no. 6
Type: Research Article
ISSN: 1750-6220

Keywords

Article
Publication date: 1 May 1971

Details of Some Components Used for Subsidiary Services in Aircraft, Missiles and Space Vehicles. The special features of this stroboscope are the high light intensity and the…

Abstract

Details of Some Components Used for Subsidiary Services in Aircraft, Missiles and Space Vehicles. The special features of this stroboscope are the high light intensity and the wide speed range. The design ensures a constant drive of 20 watts to the flash tube throughout the speed range, with a protective circuit preventing overdrive when used with external triggering.

Details

Aircraft Engineering and Aerospace Technology, vol. 43 no. 5
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 1 April 1966

I.G. Macpherson

Stroboscopic photographs of moving objects are now being used in physics teaching in many Scottish schools following the Alternative Physics Syllabus of the Scottish Education…

Abstract

Stroboscopic photographs of moving objects are now being used in physics teaching in many Scottish schools following the Alternative Physics Syllabus of the Scottish Education Department. The use of a Polaroid camera enables a print to be produced for class inspection within a minute of taking the photograph. By the beginning of session 1966–67, 92 per cent of five‐year and six‐year schools and 87 per cent of four‐year schools will teach the new course.

Details

Education + Training, vol. 8 no. 4
Type: Research Article
ISSN: 0040-0912

Article
Publication date: 1 April 2000

Jian‐Guo Zhang, A.B. Sharma, Yu‐De Ni and Zheng Li

The design issues on network architecture and modulation scheme that can be used to implement reliable MIL‐STD‐1773 avionics optical fiber data buses are discussed. Both…

1281

Abstract

The design issues on network architecture and modulation scheme that can be used to implement reliable MIL‐STD‐1773 avionics optical fiber data buses are discussed. Both single‐star and multi‐star architectures are presented to such optical fiber data buses. Several network configurations based on passive and/or active coupling components are also considered, and they are compared in terms of system complexity and reliability. Moreover, three modulation schemes are presented, i.e. partial trilevel Manchester II bi‐phase coding, extended Manchester II bi‐phase coding with beginning‐stopping flags, and pseudo‐four‐ary pulse width modulation, respectively. Their use can feasibly solve the problem associated with fast identification of correct operation states of an active transmitter at the output of optical receivers.

Details

Aircraft Engineering and Aerospace Technology, vol. 72 no. 2
Type: Research Article
ISSN: 0002-2667

Keywords

Article
Publication date: 1 June 2002

Harlen Houghton

Describes the benefits that arise from the use of Light Emitting Diodes (LEDs) for illumination in industrial machine vision systems. These include long life, stability and narrow…

Abstract

Describes the benefits that arise from the use of Light Emitting Diodes (LEDs) for illumination in industrial machine vision systems. These include long life, stability and narrow frequency bands. Also discusses precautions that need to be taken for obtaining a uniform illumination and pulsed operation.

Details

Sensor Review, vol. 22 no. 2
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 18 December 2019

Svetoslav Zabunov and Roumen Nedkov

This paper aims to reveal the authors’ conceptual and experimental work on an innovative avionics paradigm for small unmanned aerial vehicles (UAVs).

Abstract

Purpose

This paper aims to reveal the authors’ conceptual and experimental work on an innovative avionics paradigm for small unmanned aerial vehicles (UAVs).

Design/methodology/approach

This novel approach stipulates that, rather than being centralized at the autopilot, control of avionics devices is instead distributed among controllers – spread over the airframe span, in response to avionics devices’ natural location requirements. The latter controllers are herein referred to as edge controllers by the first author.

Findings

The edge controller manifests increased efficiency in a number of functions, some of which are unburdened from the autopilot. The edge controller establishes a new paradigm of structure and design of small UAVs avionics such that any functionality related to the periphery of the airframe is implemented in the controller.

Research limitations/implications

The research encompasses a workbench prototype testing on a breadboard, as the presented idea is a novel concept. Further, another test has been conducted with four controllers mounted on a quadcopter; results from the vertical attitude sustenance are disclosed herein.

Practical implications

The motivation behind developing this paradigm was the need to position certain avionics devices at different locations on the airframe. Due to their inherent functional requirements, most of these devices have hitherto been placed at the periphery of the aircraft construction.

Originality/value

The current paper describes the novel avionics paradigm, compares it to the standard approach and further reveals two experimental setups with testing results.

Details

Aircraft Engineering and Aerospace Technology, vol. 92 no. 2
Type: Research Article
ISSN: 1748-8842

Keywords

1 – 10 of 248