Jig Twist Optimization of Mach 0.745 Transonic Truss-Braced Wing Aircraft and High-Fidelity CFD Validation

This paper presents a jig twist optimization study of Mach 0.745 Transonic Truss-Braced Wing (TTBW) aircraft using an in-house developed aero-structural analysis solver VSPAERO coupled to BEAM3D. A vortex-lattice model of the TTBW model is developed, and a transonic and viscous flow correction method is implemented in the VSPAERO model to account for transonic and viscous flow effects. A correction method for the wing-strut interference aerodynamics is developed and applied to the VSPAERO solver. Also, a structural dynamic finite-element model of the TTBW aircraft is developed. This finite-element model includes the geometric nonlinear effect due to the tension in the struts which causes a deflection-dependent nonlinear stiffness. The VSPAERO model is coupled to the corresponding finite-element model to provide a rapid aero-structural analysis. A flight condition corresponding to Mach 0.745 at 42000 ft is selected for the TTBW aircraft jig twist optimization to reduce the drag coefficient. After the design is implemented, the drag coefficient of the twist optimized TTBW aircraft is reduced about 8 counts. At the end, a high-fidelity CFD solver FUN3D is used to validate the design

Jig Twist Optimization of Mach 0.745 Transonic Truss-Braced Wing Aircraft and High-Fidelity CFD Validation

This paper presents a jig twist optimization study of Mach 0.745 Transonic Truss-Braced Wing (TTBW) aircraft using an in-house developed aero-structural analysis solver VSPAERO coupled to BEAM3D. A vortex-lattice model of the TTBW model is developed, and a transonic and viscous flow correction method is implemented in the VSPAERO model to account for transonic and viscous flow effects. A correction method for the wing-strut interference aerodynamics is developed and applied to the VSPAERO solver. Also, a structural dynamic finite-element model of the TTBW aircraft is developed. This finite-element model includes the geometric nonlinear effect due to the tension in the struts which causes a deflection-dependent nonlinear stiffness. The VSPAERO model is coupled to the corresponding finite-element model to provide a rapid aero-structural analysis. A design flight condition corresponding to Mach 0.745 at 42000 ft is selected for the TTBW aircraft jig twist optimization to reduce the drag coefficient. After the design is implemented, the drag coefficient of the twist optimized TTBW aircraft is reduced about 8 counts. At the end, a high-fidelity CFD solver FUN3D is used to validate the design

Identifying Success Strategies for Hmong American Students in Higher Education

Hmong Americans\u27 postsecondary completion rates remain low when compared to other Asian ethnic groups. As the Hmong population continues to grow, so does the need for intervention to increase the total number of postsecondary graduates. Many Hmong Americans are first-generation college students and continue to face challenges and barriers that prevent them from being successful in higher education. “Forty-seven and a half percent of Hmong adults (25 years or older) reported having attended college, but not earning a degree” (National Commission on Asian American and Pacific Islander Research in Education, 2011). Without a college degree, Hmong Americans face limited resources and opportunities to advance in their careers, resulting in limited earning potential (Research Summary, n.d.). Without a college degree, career options are limited, and may result in low-wage jobs that perpetuate the poverty level of SEAAs. (“Overview of the Educational Challenges of SEAA - 2013,” n.d.) Asian Americans continue to be successful in degree completion rates, masking the struggles of sub-ethnic groups that immigrated to America in the late 1970s to early 1980s as they assimilate into America. To address the issue of low completion rates of Hmong Americans, targeted services will aid and support them through their academic journey. Many Hmong Americans begin their journey in higher education at a community college. Community colleges have been providing education and skills training helping to fill the needs of high-demand industries. Community colleges have transformed millions of American lives paving the way to the middle class through middle-class careers (Holliefield-Hoyle & Hammons, 2015, pg. 29). Attrition rates of Hmong Americans remain a primary concern in postsecondary institutions. Primary causes of attrition include inadequate financial support, unsolidified academic decisions, and life interruptions (Bowers et al., 2019, pg. 2). As colleges strive to provide resources to alleviate some of these barriers, many students do not utilize these services (Bowers et al., 2019, pg.2). The purpose of this study was to identify success strategies of Hmong Americans that completed their undergraduate degrees and beyond to provide information to current and future Hmong Americans as they pursue their degree. These strategies helped the participants as they discover new things while learning to balance school, work, children, and cultural obligations. Through a basic general qualitative study, the research identified the following themes: 1) First-Generation College Students; 2) Counseling; 3); Connection with Professors 4) Connection with colleagues; 5) Library; 6) Tutoring; 7) Personal growth. Much research is needed to continue the research into other successful measures Hmong Americans have used to complete their undergraduate degrees and beyond. This research contributes toward the growing research into successful strategies used by Hmong Americans and other students in America as the information gathered from this research will aid all postsecondary students

Incorporating Blockchain into Undergraduate Cybersecurity Curriculum-Best Practices and Recommendations

Teaching information systems (IS) and cybersecurity topics can be consistent and uncomplicated when covering foundations (e.g., networking, analytics, malware). However, when new topics begin emerging, such as blockchain, artificial intelligence, and virtual reality, covering these topics can become more difficult. In this Big Ideas in IS Research and Education presentation, we propose some best practices and recommendations for incorporating blockchain into cybersecurity curriculum. As an emerging and disruptive technology, blockchain has the potential to impact both industries and academia in the next decade. The authors have teaching experience in cybersecurity and blockchain and provide five recommendations in this presentation

Mobile Cryptocurrency for Development in Asia-Moderating Effects of Advantage, Complexity, and Compatibility

Information and communication technologies (ICTs) have been proven to promote the development of countries and regions. Asia is one of the leading regions in adopting new ICTs like mobile payment, artificial intelligence, and blockchain. The innovative technologies, relevant business values, and impacts related to blockchain are overestimated in the short term yet underestimated for a long time. While the blockchain is in the hype of both research and practice, there is minimal research related to the blockchain adoption. Among many blockchain-based applications, cryptocurrency been widely utilized in Asia. This Emergent Research Forum (ERF) Paper provides preliminary research in understanding how blockchain-based cryptocurrency revolutionizes ICT for development in Asia. This research introduces a model that considers Cryptocurrency/Bitcoin Innovation Factors (BIF), including cryptocurrency advantage, cryptocurrency complexity, and cryptocurrency compatibility as moderators. The survey method is selected and will be conducted in the future

The Role of Mobile Phones in the Provision of Equitable Health Care for Human Development

The equitable provision of healthcare entails the distribution of resources and other processes to overcome health inequality. The concept of heath equity suggests that it is differences in social and economic backgrounds of people that lead to differences in their ability to access health care. Following a review of what is known about health equity and the role of mobile health, this paper investigates the relationship between Mobile Phone Subscriptions, the United Nation Development Program’s (UNDP) Health Index, the Human Development Index, and Gini Index for all the countries of the world. The analysis discovers a significant relationship between the use of mobile phones in the provision of healthcare and human development outcomes. Further cluster analysis offers three groups of countries with certain unique characteristics that help understand the relationship between Mobile Phone Subscriptions, the Health Index and the Human Development Index and the effects of income inequalities within the countries. The contribution of this paper is in understanding the use of mobile phones for the provision of equitable healthcare

Global Financial Inclusion and Human Development: The Bitcoin Effect

The rapid rise of cryptocurrency adoption appears to effect the ability of people to improve their lives. In this paper, the most ubiquitous cryptocurrency, Bitcoin is used to investigate effects on financial inclusion and human development. The findings in this paper show a strong positive correlation between bitcoin transactions and human development, between bitcoin transactions and financial inclusion and between financial inclusion and human development. The Bitcoin effect is identified as having a cyclical relationship on financial inclusion and human development. While the Bitcoin effect has a very positive effect on the global economy, this paper uses these results to investigate what business models are enabled through the Bitcoin effect. Cluster analysis is carried out to identify business models that are relevant to the country categories they represent. Three business models are identified from the Bitcoin effect that relate to the country categories they represent. These are miners, innovators and wallets. This paper’s contribution is in discovering and describing the key characteristics of the Bitcoin effect and the business models it generates globally