Browsing by Subject "challenges"
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Item A Case Study of Tibetan Medicine: Examining Challenges of Establishing the Credibility of Traditional Medical Systems(2021-05-11) Palkyi, Tenzin; Schnyer, RosaThe medical field is seeing a shift in healthcare delivery from a disease-centered model that focuses on curing acute illnesses to a more holistic approach which prioritizes overall well-being and preventive care. With this transition, there has been an increased interest in complementary and alternative medicine- (CAM) based interventions, leading to the emergence of the Complementary and Integrative Health (CIH) field. As CIH interventions like Tibetan medicine (TM) become more widely used, recent research is being conducted to determine these treatments’ potential effectiveness and to address skepticism about their relevance in health care. This thesis intends to explore TM as a case study of traditionally- based systems of care, which consider all aspects of a patient, including mental, physical, and social factors. Furthermore, this thesis will outline the evolution of TM from its inception through recent geo-political changes in addition to the global reach TM has had in Western societies. A non-systematic literature review was conducted to identify current studies available on TM’s effectiveness, explore gaps in TM research, and articulate challenges that traditional medical systems must overcome to further develop its evidence base. Some of these challenges include improving research quality, navigating inconsistent regulations of herbal compounds, and balancing the difficulty of conducting scientifically sound medical research without sacrificing the cultural integrity of non-biomedically based systems of care. Based on this analysis of Tibetan medicine, I propose recommendations that may serve to systematically integrate complementary medicine into future Western medical training. By addressing challenges with tangible solutions, traditional medical systems can further develop their evidence base, build credibility in Western societies, and be more accessible by being safely offered independently or together with allopathic medicine.Item Challenges in Making Complex Metal Large-Scale Parts for Additive Manufacturing: A Case Study Based on the Additive Manufacturing Excavator(University of Texas at Austin, 2017) Nycz, Andrzej; Noakes, Mark W.; Richardson, Bradley; Messing, Andrew; Post, Brian; Paul, Jonathan; Flamm, Jason; Love, LonnieThe Additive Manufacturing Excavator (AME) contained several key components that were 3D printed at The Manufacturing Demonstration Facility (MDF) of Oak Ridge National Laboratory (ORNL); it was presented at and performed a live demonstration for the CONEXPO 2017 exhibition in Las Vegas, Nevada in March of 2017. This paper presents challenges in building functional, large-scale metal parts based on a case study of the excavator. The excavator’s metal arm was 3D printed using a modified Wolf Robotics automated metal inert gas (MIG) welding cell. Tasks included designing a new type of slicer for the metal additive manufacturing (AM) process, integrating the slicing software with the Wolf Robotics system, developing the deposition process, characterizing geometric features and material properties, managing heat, designing mechanical components for metal AM, and developing a machining approach to achieve the final part. Two fully functional excavator arms were printed and machined. Integrated hydraulics passageways that also served as structural stiffeners were included in the build for demonstration purposes. As a direct result of this project, Wolf Robotics is now working towards a commercially available large-scale metal AM system.Item Potentials and Challenges of Multi-Material Processing by Laser-Based Powder Bed Fusion(University of Texas at Austin, 2018) Binder, M.; Anstaett, C.; Horn, M.; Herzer, F.; Schlick, G.; Seidel, C.; Schilp, J.; Reinhart, G.Multi-material additive manufacturing offers a multitude of opportunities for increasing functional integration beyond the current state of the art. However, the real potential is only vaguely described and there are also challenges alongside the new opportunities. This paper presents a systematic collection of the challenges to be overcome by laser-based powder bed fusion before it can provide industrially relevant multi-material processes. Amongst others, parameter adaptation to avoid micro-cracking, relevant process monitoring technologies (e.g., thermography-based layer monitoring) and potential approaches for powder separation (e.g., using ferromagnetism) are described. Furthermore, to exploit the full potential of multi-material designs, possible concepts for the integration of fully functioning mechatronic devices into multi-material parts are also presented.