Overview of a HTHL Hands-On SAV Design Synthesis Methodology

2007 ◽  
Author(s):  
Xiao Huang ◽  
Bernd Chudoba
Keyword(s):  
Design Synthesis ◽  
Hands On ◽  
Synthesis Methodology

Demonstration of a prototype design synthesis capability for space access vehicle design

2020 ◽  
Vol 124 (1281) ◽  
pp. 1761-1788
Author(s):  
L. Rana ◽  
B. Chudoba
Keyword(s):  
Life Cycle ◽  
Conceptual Design ◽  
Life Cycle Cost ◽  
Best Practice ◽  
Synthesis Process ◽  
Vehicle Design ◽  
Design Decision ◽  
Design Synthesis ◽  
Design Life ◽  
Synthesis Methodology

ABSTRACTThe early conceptual design (CD) phase of space access vehicles (SAVs) is the most abstract, innovative and technologically challenging phase of the entire aerospace design life cycle. Although the design decision-making during this phase influences around 80 percent of the overall life cycle cost, it is the most abstract and thus least understood phase of the entire design life cycle. The history of SAV design provides numerous examples of project failures that could have been avoided if the decision-maker had had the capability to forecast the potential risks and threats correctly ahead of time during the conceptual design phase. The present study addresses this crucial phase and demonstrates a best-practice synthesis methodology prototype to advance the current state of the art of CD as applied to SAV design. Developed by the Aerospace Vehicle Design (AVD) Laboratory at the University of Texas at Arlington (UTA), the Aerospace Vehicle Design Synthesis process and software (AVDS) is a prototype solution for a flight vehicle configuration–flexible (generic) design synthesis capability that can be applied to the primary categories of SAVs. This study focusses on introducing AVDS, followed by the demonstration and verification of the system’s capability through a sizing case study based on the data-rich Boeing X-20 Dyna-Soar spaceplane.

Feature-Based Design Using NURBS Entities and Plex Grammar

1995 ◽  
Author(s):  
Xiaogang Guan ◽  
Vassilios E. Theodoracatos
Keyword(s):  
Concept Analysis ◽  
Synthesis Process ◽  
Nurbs Surface ◽  
Design Synthesis ◽  
Product Concept ◽  
Structure Relationship ◽  
Feature Based ◽  
New Feature ◽  
Synthesis Methodology ◽  
Feature Based Design

Abstract A new feature-based design synthesis methodology is described. Features of various levels of complexity are created and classified according to their attributes. Each feature is represented as a single internal NURBS surface. A hierarchical structure of features with corresponding parameters is maintained to enhance the design efficiency. Plex grammar is used as a structure relationship descriptor to facilitate product concept analysis and geometric synthesis. Two product design examples are presented to illustrate the concept analysis and geometric synthesis process.

Juglone: a versatile natural platform for obtaining new bioactive compounds

2021 ◽  
Vol 21 ◽  
Author(s):  
Caroline dos S. Moreira ◽  
Thaís B. Santos ◽  
Rosana H.C.N. Freitas ◽  
Paulo A.F. Pacheco ◽  
David R. da Rocha
Keyword(s):  
Bioactive Compounds ◽  
Medicinal Chemistry ◽  
Juglans Nigra ◽  
Design Synthesis ◽  
Pharmacological Evaluation ◽  
Privileged Structure ◽  
Synthesis Methodology ◽  
Biological Actions

: Juglone is a metabolite produced by several species of plants, in particular Juglans nigra. Additionally, juglone is a 1,4-naphthoquinone that has several biological actions. Antimicrobial, antifungal, sedative, oxidizing, antihypertensive, and especially anti-proliferative actions have been described for juglone. This justifies that 1,4-naphthoquinone is a privileged structure for Medicinal Chemistry, and it is useful for the development of new prototypes with varied actions. In this work, we make a profound review of juglone synthesis methodology, the biological actions of juglone, and mainly the synthesis and pharmacological actions of juglone derivatives. We hope that the potent biological actions described for these derivatives in this review will stimulate the continuous design, synthesis, and pharmacological evaluation of new juglone derivatives.

scholarly journals Evolving Engineering Design Trade-Offs

2003 ◽  
Author(s):  
Erik K. Antonsson ◽  
Yizhen Zhang ◽  
Alcherio Martinoli
Keyword(s):  
Engineering Design ◽  
Fitness Function ◽  
Sensory System ◽  
Pareto Optima ◽  
Design Synthesis ◽  
Trade Offs ◽  
Complex Engineering ◽  
Synthesis Methodology ◽  
Design Preferences

In the engineering design process, it is important to know the engineering trade-offs achievable under various design preferences and strategies. In this paper, a family of engineering design trade-offs are evolved from an automatic design synthesis methodology based on evolutionary computation. The complete Pareto optima frontier can be evolved by a consideration of fitness function that aggregates the weighted fuzzy design preferences under different trade-off strategies. An initial case study concerned with the configuration of a collective sensory system is presented and discussed, along with preliminary results obtained from simulations under a specific scenario. The results indicate that the approach can be useful for designers to solve complex engineering problems.

The Instructional SEM Laboratory at Iowa State University

1996 ◽  
Vol 54 ◽  
pp. 396-397
Author(s):  
L. S. Chumbley ◽  
M. Meyer ◽  
K. Fredrickson ◽  
F.C. Laabs
Keyword(s):  
Materials Science ◽  
Computer Network ◽  
Energy Dispersive Spectrometer ◽  
Computer Control ◽  
State University ◽  
Iowa State University ◽  
Internet Server ◽  
Schematic Layout ◽  
Hands On ◽  
Improve Instruction

The Materials Science Department at Iowa State University has developed a laboratory designed to improve instruction in the use of the scanning electron microscope (SEM). The laboratory makes use of a computer network and a series of remote workstations in a classroom setting to provide students with increased hands-on access to the SEM. The laboratory has also been equipped such that distance learning via the internet can be achieved.A view of the laboratory is shown in Figure 1. The laboratory consists of a JEOL 6100 SEM, a Macintosh Quadra computer that acts as a server for the network and controls the energy dispersive spectrometer (EDS), four Macintosh computers that act as remote workstations, and a fifth Macintosh that acts as an internet server. A schematic layout of the classroom is shown in Figure 2. The workstations are connected directly to the SEM to allow joystick and computer control of the microscope. An ethernet connection between the Quadra and the workstations allows students seated there to operate the EDS. Control of the microscope and joystick is passed between the workstations by a switch-box assembly that resides at the microscope console. When the switch-box assembly is activated a direct serial line is established between the specified workstation and the microscope via the SEM’s RS-232.

Students Involvement in Multilingual and Multicultural Community Services

2015 ◽  
Vol 22 (2) ◽  
pp. 77-89 ◽  
Author(s):  
Ying-Chiao Tsao
Keyword(s):  
Service Learning ◽  
Cultural Competence ◽  
Linguistically Diverse ◽  
Community Services ◽  
Cultural Humility ◽  
Self Assessment ◽  
Multicultural Community ◽  
Raising Awareness ◽  
Hands On ◽  
Teaching Learning

Promoting cultural competence in serving diverse clients has become critically important across disciplines. Yet, progress has been limited in raising awareness and sensitivity. Tervalon and Murray-Garcia (1998) believed that cultural competence can only be truly achieved through critical self-assessment, recognition of limits, and ongoing acquisition of knowledge (known as “cultural humility”). Teaching cultural humility, and the value associated with it remains a challenging task for many educators. Challenges inherent in such instruction stem from lack of resources/known strategies as well as learner and instructor readiness. Kirk (2007) further indicates that providing feedback on one's integrity could be threatening. In current study, both traditional classroom-based teaching pedagogy and hands-on community engagement were reviewed. To bridge a gap between academic teaching/learning and real world situations, the author proposed service learning as a means to teach cultural humility and empower students with confidence in serving clients from culturally/linguistically diverse backgrounds. To provide a class of 51 students with multicultural and multilingual community service experience, the author partnered with the Tzu-Chi Foundation (an international nonprofit organization). In this article, the results, strengths, and limitations of this service learning project are discussed.

A ’Hands-On’ Approach

ASHA Leader ◽  
2012 ◽  
Vol 17 (9) ◽  
pp. 55-55
Author(s):  
Kimberly Abts
Keyword(s):  
Hands On

Telepractice: A Survey of AuD Students Pre- and Post-Telepractice

2017 ◽  
Vol 2 (18) ◽  
pp. 28-41
Author(s):  
Kelli M. Watts ◽  
Laura B. Willis
Keyword(s):  
Doctoral Students ◽  
Graduate School ◽  
Professional Services ◽  
Hands On ◽  
Before And After ◽  
Lack Of Knowledge

Telepractice, defined by the American Speech-Language-Hearing Association (ASHA, n.d.) as “the application of telecommunications technology to the delivery of professional services at a distance by linking clinician to client, or clinician to clinician, for assessment, intervention, and/or consultation,” is a quickly growing aspect of practicing audiology. However, only 12% of audiologists are involved in providing services via telepractice (REDA International, Inc., 2002). Lack of knowledge regarding telepractice has been cited as one of the reasons many audiologists do not use telepractice to provide audiology services. This study surveyed audiology doctoral students regarding their opinions about the use of telepractice both before and after their opportunity to provide services via telepractice sessions. The authors expected that by providing students the opportunity to have hands-on training in telepractice with supervision, they would be more open to using telepractice after becoming licensed audiologists. Overall, the data indicates benefits of exposing students to telepractice while they are in graduate school.

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