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Article
Publication date: 8 May 2018

Aidan Jungo, Mengmeng Zhang, Jan B. Vos and Arthur Rizzi

The purpose of this paper is to present the status of the on-going development of the new computerized environment for aircraft synthesis and integrated optimization methods…

2401

Abstract

Purpose

The purpose of this paper is to present the status of the on-going development of the new computerized environment for aircraft synthesis and integrated optimization methods (CEASIOM) and to compare results of different aerodynamic tools. The concurrent design of aircraft is an extremely interdisciplinary activity incorporating simultaneous consideration of complex, tightly coupled systems, functions and requirements. The design task is to achieve an optimal integration of all components into an efficient, robust and reliable aircraft with high performance that can be manufactured with low technical and financial risks, and has an affordable life-cycle cost.

Design/methodology/approach

CEASIOM (www.ceasiom.com) is a framework that integrates discipline-specific tools like computer-aided design, mesh generation, computational fluid dynamics (CFD), stability and control analysis and structural analysis, all for the purpose of aircraft conceptual design.

Findings

A new CEASIOM version is under development within EU Project AGILE (www.agile-project.eu), by adopting the CPACS XML data-format for representation of all design data pertaining to the aircraft under development.

Research limitations/implications

Results obtained from different methods have been compared and analyzed. Some differences have been observed; however, they are mainly due to the different physical modelizations that are used by each of these methods.

Originality/value

This paper summarizes the current status of the development of the new CEASIOM software, in particular for the following modules: CPACS file visualizer and editor CPACSupdater (Matlab) Automatic unstructured (Euler) & hybrid (RANS) mesh generation by sumo Multi-fidelity CFD solvers: Digital Datcom (Empirical), Tornado (VLM), Edge-Euler & SU2-Euler, Edge-RANS & SU2-RANS Data fusion tool: aerodynamic coefficients fusion from variable fidelity CFD tools above to compile complete aero-table for flight analysis and simulation.

Details

Aircraft Engineering and Aerospace Technology, vol. 90 no. 4
Type: Research Article
ISSN: 1748-8842

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Article
Publication date: 16 January 2025

Mengmeng Zhang, Lefa Teng, Xue Huang, Lianne Foti, Chuluo Sun and Xinyan Yang

This study aims to shed new light on the effect of gift packaging shape, specifically the distinction between horizontal and vertical orientations, on the face consciousness of…

49

Abstract

Purpose

This study aims to shed new light on the effect of gift packaging shape, specifically the distinction between horizontal and vertical orientations, on the face consciousness of both gift givers and recipients. The underlying mechanism of the main effect is examined, focusing on the perception of social status symbols. In addition, downstream outcome variables were included in the study to explore the effects of gift package shape on willingness to buy (WTB) and word-of-mouth (WOM) in the giver and receiver contexts, respectively. Furthermore, these effects were repeatedly verified in both China and the USA, revealing the significance of cultural differences. The study also investigated the moderating effects of an individual’s power state (low or high power) on the giver’s face consciousness.

Design/methodology/approach

Six studies were conducted to address the research objectives. Study 1 compared the gift givers’ face consciousness of a gift when presented with vertical package shapes versus horizontal. Subsequently, Study 2 investigated whether consumers’ perception of social status symbols mediates the effect of gift package shape on gift givers’ face consciousness. Study 3a expanded the conceptual model to include the downstream outcome variable of WTB in the context of gift-giving. Study 3b was validated with American participants, revealing the influence of cultural background differences on face consciousness. Study 4 introduced a gift-receiving context to investigate the chain-mediated effects of gift package shapes on consumer WOM. Lastly, Study 5 critically examined the boundary effect of personal power states on the interaction between the gift givers’ face consciousness and WTB.

Findings

The results indicate that gift givers and recipients attribute higher face consciousness to gifts with vertical package shapes compared to horizontal ones. In addition, consumers’ perception of gifts as status symbols was the underlying mechanism driving the impact of gift packaging shape on face consciousness. Furthermore, the face consciousness for gift packages of vertical shape was enhanced when people were in lower-power states as opposed to higher-power states, subsequently leading to an increase in the WTB.

Research limitations/implications

The research is limited to an online virtual brand study; future field studies could be conducted to enhance the authenticity of the participants’ gift-giving experience and the overall external validity of the studies. In addition, gender-based stereotypes and the relationship between the giver and the receiver (transactional or intimate) may also influence the relationship between gift package shapes and face consciousness.

Practical implications

The practical implications of this research focus on three points. First, gift brand managers should strategically employ vertical package shapes to signal high-end attributes and evoke face consciousness among consumers, aligning with the psychology of both givers and recipients. Second, managers must consider consumers’ power states in gift-giving scenarios, tailoring packaging recommendations to the dynamics between givers and recipients to maximize market share. Last, cultural differences in face consciousness, particularly between Asian and Western cultures, necessitate that managers adapt packaging designs to respect and enhance the social status of both givers and recipients in culturally sensitive ways. These findings underscore the importance of understanding and integrating consumer psychology, power dynamics, and cultural nuances into gift packaging strategies to boost market share.

Originality/value

The research contributes to understanding the impact of gift packaging shape on the perception of face consciousness among both gift givers and recipients. It highlights the mediating role of social status symbols and extends its scope by examining downstream effects such as WTB and WOM. It explores individual power states as a moderating factor, revealing how personal dynamics influence perceptions of face-saving consciousness. Also, the cross-cultural validation of these effects in China and the USA underscores the importance of considering cultural differences.

Details

European Journal of Marketing, vol. 59 no. 2
Type: Research Article
ISSN: 0309-0566

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Article
Publication date: 6 March 2017

Mengmeng Zhang and Arthur Rizzi

A collaborative design environment is needed for multidisciplinary design optimization (MDO) process, based on all the modules those for different design/analysis disciplines, and…

397

Abstract

Purpose

A collaborative design environment is needed for multidisciplinary design optimization (MDO) process, based on all the modules those for different design/analysis disciplines, and a systematic coupling should be made to carry out aerodynamic shape optimization (ASO), which is an important part of MDO.

Design/methodology/approach

Computerized environment for aircraft synthesis and integrated optimization methods (CEASIOM)-ASO is developed based on loosely coupling all the existing modules of CEASIOM by MATLAB scripts. The optimization problem is broken down into small sub-problems, which is called “sequential design approach”, allowing the engineer in the loop.

Findings

CEASIOM-ASO shows excellent design abilities on the test case of designing a blended wing body flying in transonic speed, with around 45 per cent drag reduction and all the constraints fulfilled.

Practical implications

Authors built a complete and systematic technique for aerodynamic wing shape optimization based on the existing computational design framework CEASIOM, from geometry parametrization, meshing to optimization.

Originality/value

CEASIOM-ASO provides an optimization technique with loosely coupled modules in CEASIOM design framework, allowing engineer in the loop to follow the “sequential approach” of the design, which is less “myopic” than sticking to gradient-based optimization for the whole process. Meanwhile, it is easily to be parallelized.

Details

Aircraft Engineering and Aerospace Technology, vol. 89 no. 2
Type: Research Article
ISSN: 1748-8842

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Article
Publication date: 4 May 2012

Mengmeng Zhang and Arthur Rizzi

The goal for this paper is to bring the easy‐to‐use geometry drawing software RDS to a “solid” mesh, which could be analyzed and simulated in CEASIOM, to enhance both CEASIOM and…

373

Abstract

Purpose

The goal for this paper is to bring the easy‐to‐use geometry drawing software RDS to a “solid” mesh, which could be analyzed and simulated in CEASIOM, to enhance both CEASIOM and RDS's capabilities.

Design/methodology/approach

The RDSSUMO interface is developed based on the feature that both RDS and SUMO define their geometric model using cross‐sectional information, i.e. their “universe” shapes are close to each other.

Findings

The translation is automated and allows the engineer to easily modify and augment the geometry in the process. Two test cases are shown, with their high quality Euler mesh and CFD computations. The A321‐look‐alike test case tests the mesh quality for transonic aerodynamics, such as high‐speed trim and drag divergence; the twin‐prop asymmetric aircraft is a “diffi+cult” non‐conventional configuration analyzed for yaw stability in one‐engine out mode.

Practical implications

This paper shows that the CFD solutions based on solid grids could be obtained once the design is proposed and the RDS wire‐frame model is available. The aerodynamic properties can then be predicted in early design stage, which is very efficient for preliminary aircraft design.

Originality/value

This fast meshing tool could obtain “working” grids of a new design within hours.

Details

Aircraft Engineering and Aerospace Technology, vol. 84 no. 3
Type: Research Article
ISSN: 0002-2667

Keywords

Available. Content available

Abstract

Details

China Agricultural Economic Review, vol. 10 no. 1
Type: Research Article
ISSN: 1756-137X

Available. Content available
Article
Publication date: 4 May 2012

Askin T. Isikveren

387

Abstract

Details

Aircraft Engineering and Aerospace Technology, vol. 84 no. 3
Type: Research Article
ISSN: 0002-2667

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Article
Publication date: 19 October 2023

Lingyun Huang, Jiankun Liu and Zhigang Huang

The operational framework of external financing in the correlation between the gender of entrepreneurs and firm performance remains to be resolved. This study aims to investigate…

327

Abstract

Purpose

The operational framework of external financing in the correlation between the gender of entrepreneurs and firm performance remains to be resolved. This study aims to investigate the mediating effect of external financing on gender-based disparities in private firm performance and to explore its heterogeneity within the Chinese context.

Design/methodology/approach

Based on national data from the 10th to 13th Chinese Private Enterprise Survey, this study used a bootstrap-based mediation effect model to analyze the role of external financing as a mediator in the relationship between entrepreneur gender and firm performance.

Findings

This study found that external financing is a constructive mediator between entrepreneur gender and firm performance. Heterogeneity analysis revealed that external financing plays a complementary mediation role in the impact of entrepreneur gender on performance in West China. In the tertiary industry, external financing acts as the sole mediator for the impact of gender on firm performance. Notably, this mediating effect is present in non-startups but not in startups.

Practical implications

The findings suggest that external financing can improve the firm performance of female entrepreneurs. Governments and policymakers should strengthen financial support for female entrepreneurs in West China, tertiary industry and non-startup enterprises.

Originality/value

This paper contributes to the literature on gender and corporate governance by shedding light on the mediating role of external financing in the relationship between the gender of business owners and firm performance.

Details

Gender in Management: An International Journal , vol. 39 no. 3
Type: Research Article
ISSN: 1754-2413

Keywords

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Article
Publication date: 18 October 2024

Mengmeng Fu, Jianwei Zhang, Wenfeng Zheng and Yunshan Jiang

This study aims to examine how higher education can overcome some of the psychological barriers to pro-environmental behavior among college students by cultivating growth mindset…

79

Abstract

Purpose

This study aims to examine how higher education can overcome some of the psychological barriers to pro-environmental behavior among college students by cultivating growth mindset of nature and to investigate whether, how and when growth mindset of nature can enhance pro-environmental behavior.

Design/methodology/approach

A three-wave survey was conducted to collect quantitative data on growth mindset of nature, connectedness with nature, pro-environment behavior and pro-environmental school climate among 283 undergraduate college students at two universities in China. This study used the Process Macro for SPSS (models 4 and 14) to reveal the effects of direct, mediating and moderated mediation.

Findings

The findings showed that growth mindset of nature positively affected students’ pro-environment behavior. Moreover, growth mindset of nature contributed to pro-environment behavior through the beneficial effects of connectedness with nature. In particular, positive pro-environmental school climate strengthens the mediating effects of connectedness with nature on the relationship between growth mindset of nature and pro-environment behavior.

Practical implications

Growth mindset of nature provides a vital impetus for facilitating college students’ pro-environmental behavior so that universities can incorporate sustainable development, climate change and environmental sustainability into curricula to cultivate students’ growth mindset of nature. Furthermore, educators could develop students’ connectedness with nature through environmental education by directly exposing them to nature. Finally, the pro-environmental school climate is the essential social-environmental nourishment for college students’ pro-environmental behavior.

Originality/value

This study advances implicit theory by introducing implicit beliefs to the environmental realm. Meanwhile, this study solves the puzzle concerning why people are aware of increasingly serious environmental issues, yet few are really engaged in pro-environmental behavior. A second contribution lies in extending the application of the pro-environmental climates into educational contexts to uncover the “black box” of how growth mindset of nature promotes college students’ pro-environmental behavior. Finally, this study enriches the literature on connectedness with nature by exploring the mediating mechanism of connectedness with nature between growth mindset of nature and pro-environmental behavior.

Details

International Journal of Sustainability in Higher Education, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1467-6370

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Article
Publication date: 29 October 2021

Hongyan Jiang, Mengmeng Xu, Peizhen Sun and Jing Zhang

Mixed products, while presenting new business opportunities, raise considerable concerns among managers and researchers. However, whether mixed products (functionally vs…

863

Abstract

Purpose

Mixed products, while presenting new business opportunities, raise considerable concerns among managers and researchers. However, whether mixed products (functionally vs culturally) trigger positive or negative consumer reactions is controversial. Hereby, the present research seeks to resolve the conflicting effects by examining the moderating role of service provider type (humanoid service robot vs human employee) in the impact of mixed products on consumer reactions.

Design/methodology/approach

Two studies were conducted to explore the effect of mixed products on consumer reactions. Specifically, study 1 was developed to examine the interplay of mixed products and service provider type in shaping consumers' product attitudes and purchase intentions under an offline shopping scenario; study 2 further provided evidence for the mediating roles of perceived usefulness and perceived enjoyment in the above processes under an online-shopping context.

Findings

The convergent findings of two studies conclude that, when served by a humanoid service robot (vs human employee), consumers exhibit more positive attitudes and higher purchase intentions toward functionally (vs culturally) mixed products. Furthermore, such effect is driven by the perceived usefulness (vs perceived enjoyment) when served by humanoid robot (vs human employee).

Originality/value

First, this is one of the first studies to conceptualize mixed products as the two-dimensional construct (i.e. functionally mixed and culturally mixed), and the findings sheds light on the mixed products literature. Second, this paper introduces service provider type as the boundary condition for the impact of mixed products on consumers' product attitudes and purchase intentions, which expands the match-up hypothesis and schema theory in service marketing. Third, the current research explores the mediating roles of perceived usefulness and perceived enjoyment in the above effects, which could make significant contribution to the motivation theory.

Details

International Journal of Emerging Markets, vol. 17 no. 4
Type: Research Article
ISSN: 1746-8809

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Article
Publication date: 30 August 2024

Mengmeng Wang, Chun Zhang and Tingting Zhu

The purpose of this study is to explore the motivational role of feedback information (positive and negative) provided by the firm in the face of participant heterogeneity, in…

55

Abstract

Purpose

The purpose of this study is to explore the motivational role of feedback information (positive and negative) provided by the firm in the face of participant heterogeneity, in terms of past success experience, under the research setting of crowdsourcing contests.

Design/methodology/approach

Taking insights from feedback studies and the dynamics of self-regulation theory, four theoretical hypotheses are proposed. An integrated dataset of 4,880 contest-participant pairs, which is obtained from an online contest platform and a survey, is empirically analyzed.

Findings

Empirical analysis shows that both positive feedback and negative feedback are able to stimulate the inner needs of participants. Notably, negative (positive) feedback becomes more (less) effective in intrinsically motivating crowds as they gain more successful experience during contest participation.

Originality/value

This study brings some new knowledge for the intrinsic motivation of crowds by exploring its antecedents, which have been undervalued in extant literature. The motivational role of feedback information is particularly explored.

Details

Information Technology & People, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0959-3845

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