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Article
Publication date: 1 December 1955

B.R. Noton

FATIGUE of aircraft structures has recently become an important subject, particularly during the last two years, and many research organizations and aircraft manufacturers…

Abstract

FATIGUE of aircraft structures has recently become an important subject, particularly during the last two years, and many research organizations and aircraft manufacturers are now engaged in investigations into the problems of fatigue. Three international events dealing comprehensively with most aspects of fatigue have been arranged, and the first of these, organized by a Swedish committee of the International Union of Theoretical and Applied Mechanics, took place last May at the Kungliga Tekniska Hogskolan in Stockholm. The second conference, specifically concerned with fatigue of aircraft structures, will be held from January 30 to February 1, 1956, at Columbia University, New York. (Information may be obtained from Professor A. M. Freudenthal, 716 Engineering, Columbia University, New York 27, N.Y.) The entire field of metal fatigue will be covered by the third conference, organized by the Institute of Mechanical Engineers, to take place in London from September 10 to 14, 1956.

Details

Aircraft Engineering and Aerospace Technology, vol. 27 no. 12
Type: Research Article
ISSN: 0002-2667

Book part
Publication date: 8 June 2021

Sandip Kumar Pandit

As we have entered into the twenty-first century, the economy has undergone a great transformation. The economy has literally become weightless. In the weightless economy…

Abstract

As we have entered into the twenty-first century, the economy has undergone a great transformation. The economy has literally become weightless. In the weightless economy, the emphasis has shifted from machines, materials, and other physical resources to information and knowledge. Information and knowledge are the thermonuclear competitive weapons nowadays. More and more economic activity has become invisible and intangible. The focal point in the new economy has shifted from exploration of physical objects to exploration of knowledge-based resources and their efficient and effective management. In the last decade of the twentieth century, almost unnoticed revolution in the corporate world took place: the transition from industrial capitalism, where business was based on tangible physical assets, to a new economy, where the production of goods and services and value creation in general depends and relies on invisible intangible assets. The primary objective of the present study is to build a theoretical construct in the field of evolution of knowledge asset with a view to exploration of the concept of knowledge asset and the need for its management in modern-day life. It further aims to investigate through an empirical study the qualitative disclosure of knowledge assets in terms of selected attributes for the Indian Pharmaceutical and IT Industries based on their annual reports. Content Analysis technique has been used to analyze the degree of disclosure of knowledge assets in terms of attributes.

Article
Publication date: 20 May 2022

Md. Musfiqur Rahman and Md. Shuvo Howlader

The main purpose of the study is to analyze the impact of research and development (R&D) expenditure on firm performance and firm value in an emerging economy.

Abstract

Purpose

The main purpose of the study is to analyze the impact of research and development (R&D) expenditure on firm performance and firm value in an emerging economy.

Design/methodology/approach

In this study, firm performance is examined by firm financial performance (return on asset (ROA) and return on equity (ROE)) and market performance (Tobin's Q (TBQ)). This study conducted a multivariate analysis on the sampled data using pooled ordinary least square (OLS) regression method. In addition, both the level and lagged models have been used to test hypothesis in order to get the results.

Findings

All the empirical results from different models found significant and positive association of R&D expenditure with firm performance and firm value. The study also validates that all results are robust and free from outliers and multicollinearity issues.

Research limitations/implications

Most of the studies regarding the R&D expenditure and its impact were conducted on developed countries addressing only firm performance. Whereby, this study examined the impact of R&D expenditure on both firm's financial performance and market performance as well as firm value in the context of an emerging economy.

Practical implications

The outcomes of the study will enable the entrepreneurs, managers, investors and policymakers with more confidence to invest in R&D expenditure that will also ensure the organizational sustainability in the long run.

Originality/value

Most of the prior studies regarding the R&D expenditure and its impact were conducted on developed countries addressing only firm performance. Herein, both firm's financial performance and market performance along with firm value have been analyzed in the context of an emerging economy. This paper is unique empirical research study due to different institutional and regulatory setting as well as corporate characteristics. This study strongly advocates the organizational learning theory, agency theory and resource-based view theory of firms' allocation of funds for future growth and innovation.

Details

Journal of Applied Accounting Research, vol. 23 no. 4
Type: Research Article
ISSN: 0967-5426

Keywords

Article
Publication date: 1 September 1983

J.P. Fielding

For many years it has been the College of Aeronautics' philosophy that the best way to teach aircraft design is to actually do it. To this end the Aircraft Design MSc…

Abstract

For many years it has been the College of Aeronautics' philosophy that the best way to teach aircraft design is to actually do it. To this end the Aircraft Design MSc students perform an annual group design project based on types of aircraft that are of current interest.

Details

Aircraft Engineering and Aerospace Technology, vol. 55 no. 9
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 1 November 1969

T.E.H. Lemon and R.A.F. Beasant

THE question could well be asked as to why load controlled high strain fatigue tests should be performed, particularly when so much of the current research employs strain…

Abstract

THE question could well be asked as to why load controlled high strain fatigue tests should be performed, particularly when so much of the current research employs strain control? The answer is simple: a load controlled high strain fatigue environment was discovered, and a test programme subsequently initiated to provide data that could be applied to future designs. Besides, what more realistic way of testing is there? Fundamentally, most structures, or elements thereof, sense load only during a working life; strain is merely a resulting effect.

Details

Aircraft Engineering and Aerospace Technology, vol. 41 no. 11
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 1 April 1960

P.J.E. Forsyth and D.A. Ryder

IN 1950 Zapffe and Worden used the metal‐lurgical microscope for the examination of fatigue fracture surfaces, a technique which they called fractography. They suggested…

Abstract

IN 1950 Zapffe and Worden used the metal‐lurgical microscope for the examination of fatigue fracture surfaces, a technique which they called fractography. They suggested, as a result of their observations, that fatigue fractures showed two characteristics:

Details

Aircraft Engineering and Aerospace Technology, vol. 32 no. 4
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 4 February 2021

Kristie Briggs

This paper examines the relationship between the originality of a pharmaceutical innovation and its patent quality. Greater patent quality has been shown in the extant…

Abstract

Purpose

This paper examines the relationship between the originality of a pharmaceutical innovation and its patent quality. Greater patent quality has been shown in the extant literature to enhance market value, which better enables firms to recoup research and development (R&D) expenditures incurred during the innovation process. Understanding how originality improves patent quality can assist policymakers, when determining the optimal length of pharmaceutical patent protection and/or market exclusivity.

Design/methodology/approach

The relationship between originality and patent quality is empirically investigated using a tobit, as well as a zero-inflated negative binomial, estimation approach to account for prevalence of patents receiving zero forward citations. Moderating effects of joint innovation, innovation by a university researcher and innovation by an established innovator on originality are also considered.

Findings

There is a robust and positive relationship between patent originality and quality in the pharmaceutical sector. This relationship is positively moderated by joint patent ownership with a university. As such, innovators that target originality in new drug development (especially those collaborating with universities) should, according to extant literature, see greater increases in their market value.

Originality/value

Policymakers can use information on the originality of a new drug to discern the optimal length of market exclusivity needed to enable the innovator to recoup expenditures related to R&D. Better predictions of the timing for which firms can recoup R&D expenditures will equip policymakers with knowledge about the appropriate timing to introduce competition into the market, which is critical to reducing the price of pharmaceuticals to consumers.

Details

Journal of Entrepreneurship and Public Policy, vol. 10 no. 1
Type: Research Article
ISSN: 2045-2101

Keywords

Article
Publication date: 1 December 1970

L. Jenkinson and P. Sharman

DURING the spring of 1968, Pilot magazine initiated the design of a homebuilt aircraft. The intention was to follow through the design in a series of articles highlighting…

Abstract

DURING the spring of 1968, Pilot magazine initiated the design of a homebuilt aircraft. The intention was to follow through the design in a series of articles highlighting the problems, difficulties and, hopefully, successes of the project. The initial design was undertaken by the staff of the magazine defining the basic specification of the aircraft as a two‐place, all‐metal tourer/sports plane of modern style, capable of 5 hours' endurance, and arriving at the aircraft shown in Fig. 1. It is a sensibly small aircraft of 24ft. wing span and 20 ft. overall length with a constant 4 ft. wing chord to give a gross wing area of 96 sq. ft. The cockpit area, covered with a one‐piece sliding canopy, is a generous 48 in. wide with ample leg room forward and luggage space aft.

Details

Aircraft Engineering and Aerospace Technology, vol. 42 no. 12
Type: Research Article
ISSN: 0002-2667

Content available
Article
Publication date: 1 April 2002

36

Abstract

Details

Microelectronics International, vol. 19 no. 1
Type: Research Article
ISSN: 1356-5362

Keywords

Content available
Article
Publication date: 1 April 1999

50

Abstract

Details

Industrial and Commercial Training, vol. 31 no. 2
Type: Research Article
ISSN: 0019-7858

Keywords

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