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Article
Publication date: 21 September 2022

Sifeng Liu and Wei Tang

The purpose of this paper is to explore new ways and lay a solid foundation to solve the problem of reliability growth analysis of major aerospace equipment with various…

Abstract

Purpose

The purpose of this paper is to explore new ways and lay a solid foundation to solve the problem of reliability growth analysis of major aerospace equipment with various uncertainty data through propose new concepts of general uncertainty data (GUD) and general uncertainty variable (GUV) and build the operation system of GUVs.

Design/methodology/approach

The characteristics of reliability growth data of major aerospace equipment and the limitations of current reliability growth models have been analyzed at first. The most commonly used uncertainty system analysis methods of probability statistics, fuzzy mathematics, grey system theory and rough set theory have been introduced. The concepts of GUD and GUV for reliability growth data analysis of major aerospace equipment are proposed. The simplified form of GUV based on the “kernel” and the degree of uncertainty of GUV is defined. Then an operation system of GUVs is built.

Findings

(1) The concept of GUD; (2) the concept of GUV; (3) The novel operation rules of GUVs with simplified form.

Practical implications

The method exposed in this paper can be used to integrate complex reliability growth data of major aerospace equipment. The reliability growth models based on GUV can be built for reliability growth evaluation and forecasting of major aerospace equipment in practice. The reliability evaluation example of a solid rocket motor shows that the concept and idea proposed in this paper are feasible. The research of this paper opens up a new way for the analysis of complex uncertainty data of reliability growth of major aerospace equipment. Moreover, the operation of GUVs could be extended to the case of algebraic equation, differential equation and matrix which including GUVs.

Originality/value

The new concepts of GUD and GUV are given for the first time. The novel operation rules of GUVs with simplified form were constructed.

Abstract

Details

Grey Systems: Theory and Application, vol. 13 no. 3
Type: Research Article
ISSN: 2043-9377

Article
Publication date: 11 November 2022

Husam Ananzeh, Malek Hamed Alshirah, Ahmad Farhan Alshira'h and Huthaifa Al-Hazaima

A key goal of this research is to examine empirically whether politically connected board members are likely to impact corporate philanthropy. A further goal of this study is to…

Abstract

Purpose

A key goal of this research is to examine empirically whether politically connected board members are likely to impact corporate philanthropy. A further goal of this study is to contribute to the existing literature by examining the moderating role of political connections on the relationship between family ownership and corporate donations.

Design/methodology/approach

Based on the content analysis approach, the authors determined the level of cash and in-kind donations made by a group of 94 non-financial Jordanian companies listed on the Amman Stock Exchange. This study examined 658 annual reports spanning over seven years from 2010 to 2016. Ordinary least squares regression (OLS) is used to test the study hypotheses. In addition, this study used the probit regression to validate those results reported by the OLS regression.

Findings

Compared to unconnected companies, politically connected companies in Jordan are more likely to donate to philanthropic causes. Moreover, the results revealed that the presence of significant family ownership shareholding in a firm can weaken the firm tendency to donate. Despite this, the regression analysis results indicate that family-controlled firms with political connections are more likely to engage in charitable giving activities compared to those without political nexuses.

Research limitations/implications

The study contributes to the conversation surrounding corporate giving and sheds light on the role political connections and ownership structure (particularly family-owned firms) play in affecting donations by firms.

Practical implications

Managers of Jordanian firms listed on the stock exchange can use the study's findings to make better decisions about their donations and other philanthropic activities.

Originality/value

This study is the first to examine the relationship between firm donations and political connections in Jordan, and how political nexuses can moderate the relationship between family ownership and corporate donations. Hence, it extends prior research significantly.

Details

Journal of Accounting in Emerging Economies, vol. 13 no. 5
Type: Research Article
ISSN: 2042-1168

Keywords

Article
Publication date: 1 November 1981

SO Sir Monty Finniston has got his way. Well almost. A draft of a Royal Charter to establish an Engineering Council has been laid before Parliament. We just hope that it will not…

Abstract

SO Sir Monty Finniston has got his way. Well almost. A draft of a Royal Charter to establish an Engineering Council has been laid before Parliament. We just hope that it will not create still further dissension among those who rightly can currently call themselves Engineers.

Details

Work Study, vol. 30 no. 11
Type: Research Article
ISSN: 0043-8022

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