Search results

1 – 10 of over 4000
Open Access
Article
Publication date: 1 September 2020

Hyoung-Goo Kang and Byungsuk Han

The purpose of this study is to hypothesize that cognitive biases such as nostalgia, rosy retrospection, overconfidence, fading-affect bias and prospect theory affect how to serve…

Abstract

Purpose

The purpose of this study is to hypothesize that cognitive biases such as nostalgia, rosy retrospection, overconfidence, fading-affect bias and prospect theory affect how to serve in the military. The behaviors of those expecting military service and those who have completed the service differ significantly in evaluating the self and social value of the human capital during the military service. This difference corresponds to the predictions of the cognitive-bias literature. The authors test propositions in option framework. This study’s experimental design proposes a novel military system, a hybrid of conscription and voluntary systems. This study’s results are consistent with the hypothesis, option theory and behavioral economics literature.

Details

Journal of Derivatives and Quantitative Studies: 선물연구, vol. 28 no. 3
Type: Research Article
ISSN: 1229-988X

Keywords

Content available
Article
Publication date: 23 May 2022

Tao Wang, Zheng Xie, Yuan Li, Yan Zhang, Hao Zhang and Frank Kirchner

This study aims to introduce the DoraHand, and the basic capability and performance have been verified in this paper. Besides the idea of sharing modular design and sensor design…

Abstract

Purpose

This study aims to introduce the DoraHand, and the basic capability and performance have been verified in this paper. Besides the idea of sharing modular design and sensor design, the authors want to deliver an affordable and practical dexterous hand to the research area to contribute to the robotic manipulation area.

Design/methodology/approach

This paper introduced the DoraHand, a novel scalable and practical modular dexterous hand, which, adopting modular finger and palm design, fully actuated joint and tactile sensors, can improve the dexterity for robotic manipulation and lower the complexity of maintenance. A series of experiments are delivered to verify the performance of the hand and sensor module.

Findings

The parameters of the DoraHand are verified and suitable for the research of robotics manipulation area, the sensing capability has been tested with the static experiment and the slip prediction algorithm. And, the advantage of modular design and extensible interface have been verified by the real application.

Research limitations/implications

The authors continue improving the DoraHand and extend it to more different applications. The authors want to make the DoraHand as a basic research platform in the robotic manipulation area.

Practical implications

The DoraHand has been sent to more than ten different research institutes for different research applications. The authors continue working on this hand for better performance, easier usage and more affordability.

Social implications

This kind of dexterous hand can help researchers get rid of complex physical issues and pay more attention to the algorithm part; it can help to make robotic manipulation work more popular.

Originality/value

The key design in the DoraHand is the modular finger and sensing module. With the special design in mechanical and electrical parts, the authors build reliable hardware and can support the diversity requirement in the robotic manipulation area. The hand with tactile sensing capability can be used in more research and applications with its extensibility.

Details

Industrial Robot: the international journal of robotics research and application, vol. 49 no. 4
Type: Research Article
ISSN: 0143-991X

Keywords

Open Access
Article
Publication date: 12 October 2022

Chenhao Wei, Gang Lin, Jun Huang, Lei Song and Howard Smith

Unlike conventional aircraft, birds can glide without a vertical tail. The purpose of this paper is to analyse the influence of dihedral angle spanwise distribution on…

Abstract

Purpose

Unlike conventional aircraft, birds can glide without a vertical tail. The purpose of this paper is to analyse the influence of dihedral angle spanwise distribution on lateral-directional dynamic stability by the simulation, calculation in the development of the bird-inspired aircraft and the flight testing.

Design/methodology/approach

The gliding magnificent frigatebird (Fregata magnificens) was selected as the study object. The geometric and mass model of the study object were developed. Stability derivatives and moments of inertia were obtained. The lateral-directional stability was assessed under different spanwise distributions of dihedral angle. A bird-inspired aircraft was developed, and a flight test was carried out to verify the analysed results.

Findings

The results show that spanwise distribution changing of dihedral angle has influence on the lateral-directional mode stability. All of the analysed configurations have convergent Dutch roll mode and rolling mode. The key role of dihedral angle changing is to achieve a convergent spiral mode. Flight test results show that the bird-inspired aircraft has a well-convergent Dutch roll mode.

Practical implications

The theory that birds can achieve its lateral-directional stability by changing its dihedral angle spanwise distribution may explain the stability mechanism of gliding birds.

Originality/value

This paper helps to improve the understanding of bird gliding stability mechanism and provides bio-inspired solutions in aircraft designing.

Details

Aircraft Engineering and Aerospace Technology, vol. 94 no. 11
Type: Research Article
ISSN: 1748-8842

Keywords

Content available
Article
Publication date: 1 December 1999

48

Abstract

Details

Sensor Review, vol. 19 no. 4
Type: Research Article
ISSN: 0260-2288

Keywords

Content available
Article
Publication date: 1 September 1999

95

Abstract

Details

Sensor Review, vol. 19 no. 3
Type: Research Article
ISSN: 0260-2288

Keywords

Content available
Article
Publication date: 21 April 2022

Anthony Hughes

773

Abstract

Details

The Journal of Risk Finance, vol. 23 no. 3
Type: Research Article
ISSN: 1526-5943

Content available
Book part
Publication date: 4 December 2018

Indranarain Ramlall

Abstract

Details

The Corporate, Real Estate, Household, Government and Non-Bank Financial Sectors Under Financial Stability
Type: Book
ISBN: 978-1-78756-837-2

Open Access
Article
Publication date: 13 June 2016

Marcus Achenbach and Guido Morgenthal

The purpose of this paper is to develop a method suitable for the design of reinforced concrete columns subjected to a standard fire.

2993

Abstract

Purpose

The purpose of this paper is to develop a method suitable for the design of reinforced concrete columns subjected to a standard fire.

Design/methodology/approach

The Zone Method – a ’simplified calculation method” included in Eurocode 2 – has been developed by Hertz as a manual calculation scheme for the check of fire resistance of concrete sections. The basic idea is to disregard the thermal strains and to calculate the resistance of a cross-section by reducing the concrete cross-section by a “damaged zone”. It is assumed that all fibers can reach their ultimate, temperature dependent strength. Therefore, it is a plastic concept; the information on the state of strain is lost. The calculation of curvatures and deflections is thus only possible by making further assumptions. Extensions of the zone method toward a general calculation method, suitable for the implementation in commercial design software and using the temperature dependent stress–strain curves of the Advanced Calculation Method, have been developed in Germany. The extension by Cyllok and Achenbach is presented in detail. The necessary assumptions of the Zone Method are reviewed, and an improved proposal for the consideration of the reinforcement in this extended Zone Method is presented.

Findings

The principles and assumptions of the Zone Method proposed by Hertz can be validated.

Originality/value

An extension of the Zone Method suitable for the implementation in design software is proposed.

Details

Journal of Structural Fire Engineering, vol. 7 no. 2
Type: Research Article
ISSN: 2040-2317

Keywords

Content available
Article
Publication date: 10 April 2009

94

Abstract

Details

Soldering & Surface Mount Technology, vol. 21 no. 2
Type: Research Article
ISSN: 0954-0911

Content available
Article
Publication date: 1 March 2010

Jun Yan

This empirical study examined links between entrepreneurial personality traits and perception of new venture opportunity in a sample of 207 respondents. Four entrepreneurial…

6257

Abstract

This empirical study examined links between entrepreneurial personality traits and perception of new venture opportunity in a sample of 207 respondents. Four entrepreneurial personality traits were included to predict respondents℉ perception of new venture opportunity. They are (1) achievement motivation, (2) locus of control, (3) risk propensity, and (4) proactivity.The results of multiple regression analysis show that three of the four entrepreneurial personality traits‐locus of control, risk propensity, and proactivity‐related significantly to perception of new venture opportunity in expected directions. Among the three personality traits, proactivity was found to have the strongest influence over entrepreneurial perception. No significant relationship was found between achievement motivation and perception of new venture opportunity. Among six control variables, only work experience was found to influence perception of new venture opportunity. This study explored links between entrepreneurial personalities and cognition and its results suggest that a combination of trait and cognition approaches contributes to a better understanding of entrepreneurial decision-making process. Both theoretical and practical implications were discussed.

Details

New England Journal of Entrepreneurship, vol. 13 no. 2
Type: Research Article
ISSN: 2574-8904

Keywords

1 – 10 of over 4000