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2025

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Articles 6271 - 6300 of 6392

Full-Text Articles in Business

Work-Life Imbalance, Burning Out, Feeling Down, I Will Quit, But Quietly – The Case Of Hospitality Employees, Catherine Prentice, Sergio Dominique-Ferreira, Xuequn Wang, Jesse Tuominen, Márcia Duarte, Helena Rocha Jan 2025

Work-Life Imbalance, Burning Out, Feeling Down, I Will Quit, But Quietly – The Case Of Hospitality Employees, Catherine Prentice, Sergio Dominique-Ferreira, Xuequn Wang, Jesse Tuominen, Márcia Duarte, Helena Rocha

Research outputs 2022 to 2026

Given the long and irregular working hours and low wages in the hospitality sector, employees often experience poor well-being and suffer from burnout. Instead of leaving their jobs, these employees engage in quiet quitting, which negatively impacts organizations. This study investigates the relationships between role conflicts, employee well-being, burnout, and quiet quitting among hospitality employees. The study was undertaken at hotels with different star ratings in Portugal. Data were collected from both frontline and backstage employees from different departments at the survey hotels, Structural equation modeling with Mplus was performed to analyze the data. The results indicate that role conflicts …


Hitting The Jackpot: What Drives Casino Hotel Stock Returns’ Predictability?, Thach Pham, Deepa Bannigidadmath, Edmund Goh, Anna Golab Jan 2025

Hitting The Jackpot: What Drives Casino Hotel Stock Returns’ Predictability?, Thach Pham, Deepa Bannigidadmath, Edmund Goh, Anna Golab

Research outputs 2022 to 2026

Forecasting casino hotel stock prices are strategically important to key stakeholders making investment decisions. However, there is a paucity of studies that have examined the impact of macro-economic variables, sector-specific variables and firm-specific variables on casino stock returns. This research fills a research gap by examining the predictability of Australian casino hotel stock returns. The forecasting of casino hotel stock prices was modelled using econometric panel predictive regression analysis through the efficacy of 26 predictors comprising macroeconomic variables, sector-specific variables, and firm-specific variables as predictors. All eight casinos listed on the Australia Stock Exchange (ASX) were included in our sample. …


Sounds Of Silence: Using The Stereotype Content Model To Understand Perceptions Of Introverts And Extraverts At Work, Mallory A. Mccord Jan 2025

Sounds Of Silence: Using The Stereotype Content Model To Understand Perceptions Of Introverts And Extraverts At Work, Mallory A. Mccord

Psychology Faculty Publications

This paper drew on the stereotype content model (SCM) to clarify cultural stereotypes about introverted and extraverted people at work to increase our understanding of the stereotype-driven process that may lead to negative responses to introversion and subsequent detriment to employee health and well-being. The hypothesis that introverted workers would be rated as lower in warmth and competence than extraverted workers was examined across three studies. Study 1 used qualitative content analyses to assess open responses that freely described introverted and extraverted colleagues. Study 2 tested the hypothesis quantitatively using established measures of warmth and competence. Finally, Study 3 tested …


The Historical Evolution Of Corporate Social Responsibility: A Foreword To The Eli Guidance, Reuven S. Avi-Yonah Jan 2025

The Historical Evolution Of Corporate Social Responsibility: A Foreword To The Eli Guidance, Reuven S. Avi-Yonah

Other Publications

This issue includes the “ELI Report on Company Capital and Financial Accounting for Corporate Sustainability” and accompanying studies, including Anne Le Manh, https://doi.org/10.1515/ael-2021-0041, “Accounting Policies and Dividend Limitation: A European Comparison”, and country reports from Germany, Italy, France, Croatia, Japan, and the UK. The focus of the Report is on environmental, social and governance (ESG) considerations, which “concern broad matters pointing to the sustainable and responsible long-term relationship of companies with stakeholders, society and nature … In this context, an important and timely debate is ongoing as to how companies could and should be sustainable and responsible for the benefit …


Contextualising Hotel Career Behaviour: Testing A Sociocultural And Organizational Career Model, Franklin Akosa, Songshan (Sam) Huang, Hossein Ali Abadi, Jun Wen Jan 2025

Contextualising Hotel Career Behaviour: Testing A Sociocultural And Organizational Career Model, Franklin Akosa, Songshan (Sam) Huang, Hossein Ali Abadi, Jun Wen

Research outputs 2022 to 2026

This study applies Social Cognitive Career Theory (SCCT) to develop and empirically test a contextual model of hotel career outcomes in Ghana, focusing on how social and organizational factors shape employees' career attitudes and intentions. Drawing on survey data from 769 frontline hotel employees, Partial Least Squares Structural Equation Modeling (PLS-SEM) was employed to assess both the measurement and structural models. The results reveal that subjective norms significantly and positively influence career attitudes. Transformational leadership not only strengthens employees' career attitudes and intentions but also moderates the relationship between subjective norms and career attitudes, amplifying their positive effect. Additionally, favourable …


Sustainability Solution: Renewable Energy Innovation Against Climate Disasters, Hiva Rastegar, Aymen Sajjad, Gabriel Eweje, Kazunori Kobayashi Jan 2025

Sustainability Solution: Renewable Energy Innovation Against Climate Disasters, Hiva Rastegar, Aymen Sajjad, Gabriel Eweje, Kazunori Kobayashi

Research outputs 2022 to 2026

In an era where climate change poses profound threats to human life and activities, the need for innovative renewable energy solutions has never been more critical. Accordingly, this study examines the moderating effects of natural disaster uncertainty and climate policy uncertainty on firms' pursuit of renewable energy innovation following climate change–induced disasters. Through an in-depth analysis grounded in the behavioral theory of the firm and integrated with the threat rigidity model, this study explores how these uncertainties influence firms' behavior following climatic threats. Using a difference-in-difference-in-differences approach in confluence with meta-analysis, the study scrutinizes the pursuit of renewable energy innovation …


Are Csr Incidents Truly Bad News?, Chen Chen, John A. Doukas, Rongyao Gloria Zhang Jan 2025

Are Csr Incidents Truly Bad News?, Chen Chen, John A. Doukas, Rongyao Gloria Zhang

Finance Faculty Publications

We revisit whether disclosures of negative Corporate Social Responsibility (CSR) incidents adversely affect firms' stock prices. While univariate tests reveal significant negative abnormal returns around incident announcements, the effect disappears once firm characteristics, industry, and time‐fixed effects are controlled for. We find no robust evidence that CSR incidents or firms' Environmental, Social, and Governance (ESG) commitments influence stock price reactions on the event day or across broader windows. These results suggest that previously documented negative market responses may be attributable to endogeneity. Our baseline results are consistent with informed trading behavior: short‐sellers do not increase activity in incident‐related stocks relative …


The Impact Of Short-Term Rental Activity On House Prices: Evidence From Coastal Virginia, Navid Safari, Lei Zhang, Timothy M. Komarek Jan 2025

The Impact Of Short-Term Rental Activity On House Prices: Evidence From Coastal Virginia, Navid Safari, Lei Zhang, Timothy M. Komarek

Finance Faculty Publications

Short-term rentals such as Airbnb have grown substantially in recent years. In this study, we investigated the effect of Airbnb rentals on neighboring house prices in Hampton Roads, Virginia. We focus on three different measures of Airbnb activity to obtain more robust results. Our measures include active Airbnb listings, active listings with at least one reservation, and the sum of reservations over three different periods. Consistent with previous literature, our main results show that prior Airbnb rental activity has a positive impact on the surrounding housing sales prices. Furthermore, the localized impact diminishes over geographic space (i.e., distances greater than …


Labor Heterogeneity, Labor Adjustment Costs, And Externally Financed Firm Growth, Enxi An, Kenneth Yung Jan 2025

Labor Heterogeneity, Labor Adjustment Costs, And Externally Financed Firm Growth, Enxi An, Kenneth Yung

Finance Faculty Publications

Highlights

• Because skilled workers entail higher hiring and firing expenses, firms tend to retain skilled workers in the face of the high labor adjustment costs (LACs).

• The retention of skilled workers imposes inflexibility on business operations and exposes firms to cash flow shocks.

• Firms with high LACs hoard precautionary cash in the face of higher cash flow risk.

• We find a positive relationship between LACs and externally financed firm growth.

• Equity is the major source of external funds for firm growth in the face of high LACs.

• The retention of skilled workers elevates conflicts …


The Role Of Intangible Assets In Shaping Firm Value, Feng Dong, John Doukas Jan 2025

The Role Of Intangible Assets In Shaping Firm Value, Feng Dong, John Doukas

Finance Faculty Publications

This study introduces a new metric to evaluate a firm's intangible asset intensity, focusing on its ability to generate revenue from nonphysical assets. It finds a strong positive correlation between firm performance and both internally generated and externally acquired intangible assets. Firms with high intangible intensity outperform peers by 3% annually. The oversight of intangible assets is identified as a factor in value stocks' underperformance. Rigorous tests, including endogeneity checks, confirm these firms exhibit superior accounting quality, labour investment efficiency and acquisition returns. A framework highlights how managerial attributes enhance firm value through decision-making.


Artificial Intelligence And Digital Technologies In Finance: A Comprehensive Review, Soudeh Pazouki, Mohamad Jamshidi, Mirarmia Jalali, Arya Tafreshi Jan 2025

Artificial Intelligence And Digital Technologies In Finance: A Comprehensive Review, Soudeh Pazouki, Mohamad Jamshidi, Mirarmia Jalali, Arya Tafreshi

Finance Faculty Publications

This study explores the transformative impact of artificial intelligence (AI) and digital technologies on the financial technology (FinTech) industry, highlighting their role in fostering business growth, operational efficiency, and enhanced customer engagement. AI-driven strategies have unlocked new avenues for streamlining workflows, boosting productivity, and expanding financial inclusion by reaching underrepresented populations. However, these advancements also pose challenges, including navigating complex regulatory frameworks and adapting to the rapidly evolving technological landscape. This paper delves into the macroeconomic effects of AI, examining its influence on labor markets, consumer behavior, and organizational success. Furthermore, the paper discusses blockchain applications and their potential to …


Transformative Impact Of Ai And Digital Technologies On The Fintech Industry: A Comprehensive Review, Soudeh Pazouki, Behdad Jamshidi, Armia Jalali, Arya Tafreshi Jan 2025

Transformative Impact Of Ai And Digital Technologies On The Fintech Industry: A Comprehensive Review, Soudeh Pazouki, Behdad Jamshidi, Armia Jalali, Arya Tafreshi

Finance Faculty Publications

This paper examines the impact of artificial intelligence (AI) and digital technologies on the financial technology (FinTech) industry and demonstrates how AI- enabled strategies are increasing the ability of businesses not only to grow, but also to better serve their customers through operational efficiencies. But as immersive as the technological advancements may be, they present challenges in connection with increasingly complicated licensing regulations and a constantly evolving technological landscape. We examine the way AI and algorithms are streamlining workflows, enhancing productivity and expanding access to financial resources for traditionally under – served populations. The paper also discusses the macroeconomic implications …


Does The Acquirer's Complexity Affect The Market Reaction To M&A Decisions?, Rajib Chowdhury, John A. Doukas Jan 2025

Does The Acquirer's Complexity Affect The Market Reaction To M&A Decisions?, Rajib Chowdhury, John A. Doukas

Finance Faculty Publications

We examine whether and how acquiring firms' complexity affects investor perception at the announcement of M&A decisions. Using well-established data of firm complexity developed through combining machine learning and a lexicon of words, we find a significant positive relationship between acquiring firm complexity and cumulative abnormal returns (CAR), indicating that more intricate firms are viewed as more valuable or competent in mergers and acquisitions. This association is stronger for acquirers with high operating risk, organizational capital, R&D intensity, large and independent boards, and larger targets. We also present evidence that high-complexity bidders offer higher takeover premiums. Our study contributes to …


Value Co-Creation In Live Streaming Through Tourism Scenes: A Contextual Marketing Perspective, Jun Yu, Chaowu Xie, Songshan Huang Jan 2025

Value Co-Creation In Live Streaming Through Tourism Scenes: A Contextual Marketing Perspective, Jun Yu, Chaowu Xie, Songshan Huang

Research outputs 2022 to 2026

Purpose: This study aims to identify a value co-creation framework for live streaming through tourism scenes (LStTS). It also clarifies the value attributes of LStTS and makes an empirical test. Design/methodology/approach: The study used a mixed-method approach. In Study 1, a total of 12,216 pieces of viewers’ comments and ten web news reports were coded and analyzed employing a grounded theory approach. In Study 2, data were collected from 587 Douyin e-commerce users. Exploratory factor analysis and partial least squares structural equation modeling were used to test the value co-creation framework of LStTS. Findings: In Study 1, six value attributes …


The Influence Of Project Managing Capability, It Integration, Supply Coordination, And Process Innovation To Improve Organizational Performance Of Educational Institutions, Ellysa Sri Hartati, Hotlan Siagian, Zeplin Jiwa Husada Tarigan, Ferry Jie Jan 2025

The Influence Of Project Managing Capability, It Integration, Supply Coordination, And Process Innovation To Improve Organizational Performance Of Educational Institutions, Ellysa Sri Hartati, Hotlan Siagian, Zeplin Jiwa Husada Tarigan, Ferry Jie

Research outputs 2022 to 2026

The organization strives to provide timely service according to customer needs. Organizations must communicate and make the right decisions quickly to improve performance. The research aims to assess the influence of project management capability, integration, and coordination in improving organizational performance. Data is collected using a questionnaire designed with a five-point Likert scale. The respondents are all suppliers or vendors of high school educational Institutions in East Java. The organization has a project manager responsible for all procurement and projects. The criteria of suppliers or vendors are those who have paid taxes, have a taxpayer number, and have an adequate …


Education For Sustainable Development: An Assessment Of Australian And Canadian Business Schools, Eduardo Ordonez-Ponce, Mehran Nejati, Rahatulaain Ahmad Jan 2025

Education For Sustainable Development: An Assessment Of Australian And Canadian Business Schools, Eduardo Ordonez-Ponce, Mehran Nejati, Rahatulaain Ahmad

Research outputs 2022 to 2026

Purpose: This study aims to investigate whether and how business schools in Australia and Canada advocate for education for sustainable development. Design/methodology/approach: This exploratory study used a sequential mixed methods design, using a combination of qualitative content analysis and thematic analysis. During phase 1, sustainability reports developed by Australian and Canadian business schools (SIP reports), which are signatories to the Principles for Responsible Management Education (PRME), were reviewed using qualitative content analysis methods. Following that, a thematic analysis of semi-structured interviews with nine representatives from selected business schools from Australia and Canada were conducted to triangulate and interpret the findings …


Examining Love As A Central Ethic Of Leadership: A Kierkegaardian And Feminist Reading, Edward Wray-Bliss, Irene E. De Pater Jan 2025

Examining Love As A Central Ethic Of Leadership: A Kierkegaardian And Feminist Reading, Edward Wray-Bliss, Irene E. De Pater

Research outputs 2022 to 2026

This paper examines love as a concept for advancing our understanding of the ethics of leadership. We draw upon writings that consider love to be at the heart of modern subjects’ search for meaning and affective attachment to organisation – necessitating, we argue, an exploration of leadership too in these terms. Existing works on leaders’ supposed love for those they lead are considered. These serve as a springboard from which to undertake a philosophical examination of two dominant formulations of an ethics of love in Western culture: neighbour and agapeic love. Neither of these conceptualisations, we argue, suffice as an …


Us-China Competition, World Order And Economic Decoupling: Insights From Cultural Realism, Naoise Mcdonagh Jan 2025

Us-China Competition, World Order And Economic Decoupling: Insights From Cultural Realism, Naoise Mcdonagh

Research outputs 2022 to 2026

This study examines how US-China geopolitical rivalry is reshaping global economic order. It identifies gaps in existing research on hegemonic state behaviour and presents an alternative theory based on cultural realism. This latter builds on realism by arguing that political culture influences the intensity of geopolitical tensions. Drawing on domestic political discourse, this study demonstrates that US and China geopolitical tensions are driven by conflicting national political cultures that generate competing visions of global order, reducing the capacity of international institutions to sustain cooperation. This divergence manifest in geoeconomic competition and weaking multilateralism. Theoretical expectations suggest an emerging geoeconomic world …


Hot Management Trends, Vanessa Ratten, Marthin G. Nanere, Miguel Pina E Cunha, Yuka Fujimoto, Ali Intezari, Jerónimo García-Fernández, Subas Dhakal, Waleed Omri, Jose Ramon Saura, Andrei Lux, Aymen Sajjad, Ana Lisboa, Clare D’Souza Jan 2025

Hot Management Trends, Vanessa Ratten, Marthin G. Nanere, Miguel Pina E Cunha, Yuka Fujimoto, Ali Intezari, Jerónimo García-Fernández, Subas Dhakal, Waleed Omri, Jose Ramon Saura, Andrei Lux, Aymen Sajjad, Ana Lisboa, Clare D’Souza

Research outputs 2022 to 2026

No abstract provided.


Scale Development For Measuring Sustainability Of Urban Destinations From The Perspectives Of Residents, Tourists, Businesses And Government, S. M. Rasoolimanesh, Shi Y. Chee, Atchara Salee Jan 2025

Scale Development For Measuring Sustainability Of Urban Destinations From The Perspectives Of Residents, Tourists, Businesses And Government, S. M. Rasoolimanesh, Shi Y. Chee, Atchara Salee

Research outputs 2022 to 2026

This study develops four subjective scales to measure a destination’s sustainability from the perspectives of residents, tourists, businesses and government agencies. Using the expert opinion survey, participants were asked to evaluate the initial list of indicators based on five aspects of sustainability, including economic, socio-cultural, environmental, political and technological sustainability for each stakeholder group. Then, the scales were validated using partial least squares - structural equation modeling (PLS-SEM) and confirmatory composite analysis (CCA). This article has a unique theoretical contribution by developing four scales to measure the sustainability of destinations from the perspective of four main stakeholders. Moreover, this article …


Certain Knowledge Of Administrative Decisions Issued By Artificial Intelligence Systems In The Public Sector: A Comparative Analysis, Nayel Musa Alomran, Odai Mohammad Alheilat Jan 2025

Certain Knowledge Of Administrative Decisions Issued By Artificial Intelligence Systems In The Public Sector: A Comparative Analysis, Nayel Musa Alomran, Odai Mohammad Alheilat

All Works

This paper aims to elucidate the matter of certain knowledge pertaining to administrative decisions, those issued by artificial intelligence. It also clarifies the position of the administrative judiciary with regard to the adoption of this presumption and through a comparative analysis of administrative judicial applications in Jor-dan, Egypt, and Morocco. The text addresses the most significant evidence for achieving certain knowledge of an administrative decision – and thereby initiating the appeal period against the appellant. The question at hand is whether the administrative judiciary applies the traditional theory of certain knowledge to its counterpart issued by artificial intelligence systems, especially …


Social And Commercial Crowdfunding Through The Lens Of The Theory Of Planned Behaviour And Financial Well-Being, Joanna Adamska, Urszula Mrzygłód Jan 2025

Social And Commercial Crowdfunding Through The Lens Of The Theory Of Planned Behaviour And Financial Well-Being, Joanna Adamska, Urszula Mrzygłód

Journal of Banking and Financial Economics

A unique feature of crowdfunding is that it relies on numerous individuals contributing financially to the project, which sets it apart from traditional financing channels. Unlike banks, where funding decisions are subject to strict prudential criteria and the creditworthiness of the borrowing entity, crowdfunding projects appeal to various worldviews and values held by potential backers. Therefore, the financial decision to support the crowdfunding project becomes a unique problem in personal finance. This study aims to analyse the psychological and financial factors influencing crowdfunding participation, comparing social and commercial projects using the Theory of Planned Behaviour (hereinafter: TPB) and subjective financial …


Toward Charity Engagement Of Generation Z: Do Gender And Economic Standing Of Household Matter?, Sylwia Badowska, Liwia Delińska Jan 2025

Toward Charity Engagement Of Generation Z: Do Gender And Economic Standing Of Household Matter?, Sylwia Badowska, Liwia Delińska

Journal of Marketing and Consumer Behaviour in Emerging Markets

In Poland, non-profit organizations face challenges in attracting and engaging donors, especially of younger ages, in charity. The study explores factors such as gender and household economic standing of Generation Z’s representatives in order to determine charity engagement in the wake of the frequency, value, and channels of financial donations among Generation Z. A survey (CAWI method) was conducted among young people under 25 in Poland. Descriptive statistics and statistical tests were performed to analyse the primary data.

Outcomes show that young donors mostly provide financial aid donations once a year and both online platforms and traditional collection methods were …


Storytelling As A Method Of Increasing The Engagement Of Market Research Participants, Michał Ścibor-Rylski Jan 2025

Storytelling As A Method Of Increasing The Engagement Of Market Research Participants, Michał Ścibor-Rylski

Journal of Marketing and Consumer Behaviour in Emerging Markets

The presented study is a partial replication of the effect discovered in the author’s previous studies on the influence of storytelling techniques on quantitative market research participant engagement. The study was conducted using the CAWI method on a nationwide sample of N=517. In the experimental group, all questions were asked in a narrative form and were part of a coherent story. The traditional approach was used with the control group. An additional independent variable was the moment of giving instructions containing storytelling elements: before or after the presentation of the advertisement The results replicate the main effect showing that using …


What Role Do Finance Ministers Play In Political Business Cycles? Evidence-Based On A New African Dataset, Christine Olivia Strong Jan 2025

What Role Do Finance Ministers Play In Political Business Cycles? Evidence-Based On A New African Dataset, Christine Olivia Strong

Economics Faculty Publications

This study investigates how the personal characteristics of finance ministers influence political budget cycles in Africa. Using a new dataset covering 300 finance ministers across 23 countries from 1980 to 2020, we find that political budget cycles primarily take the form of increased government consumption during election years. Ministers with prior central banking experience are less likely to amplify spending in election years, effectively curbing political budget cycles. These results remain consistent after accounting for institutional quality, ministerial tenure, and other confounding factors. The findings contribute to the literature by showing that the appointment of finance ministers in African countries …


Market Reactions To Disruptions In The Aerospace Industry: An Event Study Analysis Of Abnormal Returns And Corporate Resilience, Rose L. Lauture Jan 2025

Market Reactions To Disruptions In The Aerospace Industry: An Event Study Analysis Of Abnormal Returns And Corporate Resilience, Rose L. Lauture

Doctoral Dissertations (DBA)

This study examines the effects of component failures, regulatory actions, and safety violations on stock returns and market volatility in the U.S. aerospace sector. Using FAA incident reports, WRDS market data, and corporate disclosures, the analysis combines event study methodology with ARCH/GARCH volatility models and a multiple regression approach. The results reveal that while incident frequency does not significantly affect stock prices measured by abnormal returns, firm-specific financial indicators—such as cash holdings and book-to-market ratio—play a substantial role. The study highlights the limited explanatory power of traditional regression models and calls for the inclusion of market risk and investor sentiment …


Improving Public Sector Procurement Methods In International Practices: A Comparative Study, Karem Sayed Aboelazm, Fady Tawakol, Emad Ibrahim, Hanadi Sharif Jan 2025

Improving Public Sector Procurement Methods In International Practices: A Comparative Study, Karem Sayed Aboelazm, Fady Tawakol, Emad Ibrahim, Hanadi Sharif

All Works

Objective: This paper presents the methods of public sector procurement in some public procurement laws such as UNITRAL law, Egyptian Law, Indian Law, Kenyan Law, and UAE law. Theoretical Framework: Some of the modern methods used by many countries, the research also sought to develop a clear definition of public sector procurement and relied in this research on the comparative approach as a significant approach to study for comparing the laws of countries. Method: This paper used descriptive-analytical methodology to analysis the legal frameworks of public sector procurement methods in Egypt, UAE, and other laws in comparison, the research reached …


Females On Board, Stakeholder Orientation, And Esg Disclosure: An Evidence From The Tourism And Transportation Industries, Akrum Helfaya, Phuong Bui, Ahmed Aboud Jan 2025

Females On Board, Stakeholder Orientation, And Esg Disclosure: An Evidence From The Tourism And Transportation Industries, Akrum Helfaya, Phuong Bui, Ahmed Aboud

All Works

In the tourism and transportation (T&T) industries, female directors' contributions are undervalued despite the strong emphasis on board gender diversity in management research. We investigate whether the impact of multiple board gender diversity measures on environmental, social, and governance (ESG) practices varies between shareholder- and stakeholder-oriented countries and between T&T industries, drawing on insights from both managerial and psychological perspectives. Using an international sample of 790 firm-year observations representing 79 listed firms from 16 countries, we find that gender diversity is positively associated with ESG disclosure practices, and this relationship is more pronounced in shareholder-oriented countries and the transportation sector. …


A Systemic Analysis Of Helicopter Instructional Accidents In The United States From 2010 To 2022, Gustavo Sanchez Cortes, Dimitrios Ziakkas, Mary E. Johnson Jan 2025

A Systemic Analysis Of Helicopter Instructional Accidents In The United States From 2010 To 2022, Gustavo Sanchez Cortes, Dimitrios Ziakkas, Mary E. Johnson

Journal of Aviation/Aerospace Education & Research

A high number of accidents during helicopter training in the United States (U.S.) highlights the need for research to investigate their causal and contributing factors. In this retrospective study, researchers analyzed helicopter instructional accidents reported in the National Transportation Safety Board (NTSB) Case Analysis and Reporting Online (CAROL) database. The Systems Theoretic Accident Model and Processes (STAMP) and Systems-Theoretic Process Analysis (STPA) methodologies were used to identify hazards and unsafe control actions in helicopter training, using autorotation maneuvers as a case study. Helicopter instructional flights in the U.S. accounted for 299 accidents between 2010 and 2022, with an average accident …


Integrated Qfd-Triz Optimization Method For Satellite Solar Array Design In Cost-Sensitive Environment, Hongyi Zhang, Liang Su Jan 2025

Integrated Qfd-Triz Optimization Method For Satellite Solar Array Design In Cost-Sensitive Environment, Hongyi Zhang, Liang Su

International Journal of Aviation, Aeronautics, and Aerospace

With the rapid evolution of commercial space markets in the new space era, satellite design philosophy is transitioning from "performance supremacy" toward "cost-effectiveness priority." This research concentrates on solar arrays, a critical component representing 15%-20% of satellite costs, addressing limitations in traditional design methodologies that inadequately coordinate user requirements and lack systematic frameworks for cost-performance collaborative optimization. We propose a solar array optimization methodology predicated on the integration of Quality Function Deployment (QFD) and the Theory of Inventive Problem Solving (TRIZ). This methodology incorporates cost dimensions through an extended QFD matrix, employs TRIZ to resolve technical contradictions, and develops a …