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Article
Publication date: 12 March 2018

Ioannis E. Nikolaou, Konstantinos P. Tsagarakis and Kyriaki Tasopoulou

The purpose of this paper is to address two research questions: which are the key factors that stimulate entrepreneurs to invest in ecopreneurship, and how ecopreneurhsip…

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Abstract

Purpose

The purpose of this paper is to address two research questions: which are the key factors that stimulate entrepreneurs to invest in ecopreneurship, and how ecopreneurhsip contributes to environmental sustainability.

Design/methodology/approach

To answer these questions, a framework has been developed to identify the incentives that lead entrepreneurs to invest in firms in the ecopreneurship through institutional and resource-based thinking.

Findings

From a survey of 91 Greek firms from the green service sector, it is shown that some specific institutional and resource-based view factors play a critical role in green entrepreneurs’ decisions, as well as some certain environmental practices that are frequently used by entrepreneurs to address environmental issues.

Research limitations/implications

First, the answer of the second research question through data collected by a questionnaire survey may be faced with skepticism by some authors, as it could be seen that entrepreneurs and managers of firms could have overstated their company's environmental activities. Second, although the sample selection of 91 firms is a representative sample (response rate 12.35 percent) of the total population of Greek green firms (761) and equal to other relative studies, a higher number of firms and a wider variety of green entrepreneurship ventures is necessary in future research.

Practical implications

The findings are useful for scholars, practitioners and policy makers since it provide information regarding the behavior of green entrepreneurs.

Originality/value

The paper analyze the types of green entrepreneurs in relation to the different features and strategies which are emerged from two theories, such as institutional and resource-based theory.

Details

Management of Environmental Quality: An International Journal, vol. 29 no. 2
Type: Research Article
ISSN: 1477-7835

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Article
Publication date: 10 August 2015

I. T. Chondrou, G Mavrantonakis, N Tsagarakis, E Vergis, D Pangalos and T. G. Chondros

– The purpose of this paper is to study the main landing gear (MLG) mechanism configuration.

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Abstract

Purpose

The purpose of this paper is to study the main landing gear (MLG) mechanism configuration.

Design/methodology/approach

Mechanism kinematics and dynamics, stress analysis and sizing of the MLG structural members, and fatigue issues related with the mechanism operation. Spreadsheet solutions were incorporated to this survey to analyze the most conceivable loading situations, and important factors of the mechanism design for an initial evaluation of safety implications.

Findings

MLG design approach along with conservative fatigue design factors lies in the area of accepted limits in commercial aircraft industry.

Research limitations/implications

MLG loading associated with landing as well as those associated with ground maneuvers (steering, braking and taxiing) contribute significantly to fatigue damage, along with the stresses induced by manufacturing processes and assembly. The application of FEA methods for the design of the landing gear does not always guarantee a successful approach to the problem solution, if precise analytical solutions are not available in advance.

Practical implications

From the investigation of this incident of fractured struts of the MLG it is confirmed that the reduction in Pintle Housing diameter on the upper part has contributed to the avoidance of damaging the fuel tank above the MLG that would lead to a catastrophic event. On the other hand, the airframe of the SKY-Jet was proved efficient for a belly landing with minor damages to the passengers and heavier damages for the aircraft.

Social implications

On-line vibration monitoring sensors hooked up to the landing gear strut and Pintle House would greatly enhance safety, without relying in optical surveys in hard to access and inspect areas of the landing gears mechanisms housings.

Originality/value

Analytic methods were adopted and spreadsheet solutions were developed for the MLG main loading situations, along with design issues concerning mechanism kinematics and dynamics, stress analysis and sizing of the MLG structural members, as well as fatigue issues related with the mechanism operation. Spreadsheet solutions were incorporated to this survey to analyze the most conceivable loading situations, and important factors of the mechanism design for an initial evaluation of safety implications.

Details

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

Keywords

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