Many courses touched on the importance of ethical considerations in engineering. For example, both 18-100 and 18-500 had slides dedicated to the societal\/economic\/environmental impact of engineering.<\/span><\/p>\n Modularity is also emphasized in many ECE and CS courses. Project-heavy courses such as 18-341, 18-349, 15-445, 17-214 especially focused on this, since modularity makes a large project more testable and maintainable.<\/span><\/p>\n For the first half of the week, I focused on researching microcontrollers and databases.<\/span><\/p>\n In the end, my teammates and I decided to use a Raspberry Pi for speech recognition because it can interface with sensors and microphones and has CPU and memory powerful enough to drive a speech recognition algorithm. I also found some sample projects that use a Raspberry Pi for signal processing:<\/span><\/p>\n I focused my database research on comparing Amazon DynamoDB and Redis:<\/span><\/p>\n Document model<\/span><\/td>\n Secondary database models: document store, graph DBMS, and spatial DBMS<\/span><\/td>\n<\/tr>\n R&W fast regardless of table size<\/span><\/td>\n Optimized for complicated data structures<\/span><\/td>\n<\/tr>\n Data still available even if one zone goes offline<\/span><\/td>\n Geospatial data, live streams, and real-time analytics<\/span><\/td>\n<\/tr>\n For now, we are planning on using DynamoDB because our project requires fast insertions and deletions but not complex data structures. The final decision will, of course, also depend on whether we\u2019re able to get AWS credit through this course.<\/span><\/p>\n For the second half of the week, I worked on preparing for the design review presentation.<\/span><\/p>\n I am on track with our schedule. In fact, we were able to get a Raspberry Pi 4 and start playing with it ahead of time.<\/span><\/p>\n I will be presenting our design in class.<\/span><\/p>\n In addition, I will discuss the potential of getting AWS credits with the instructors and start familiarizing myself with DynamoDB\u2019s APIs.<\/span><\/p>\n Once we review design review feedback, my teammate and I will also place orders for the hardware components.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":" Principles of Engineering, Science, and Mathematics – Relevant Courses Many courses touched on the importance of ethical considerations in engineering. For example, both 18-100 and 18-500 had slides dedicated to the societal\/economic\/environmental impact of engineering. Modularity is also emphasized in many ECE and CS courses. Project-heavy courses such as 18-341, 18-349, 15-445, 17-214 especially focused … Continue reading “Nina Duan\u2019s Status Report For 2\/18\/2023”<\/span><\/a><\/p>\n","protected":false},"author":687,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[],"_links":{"self":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/posts\/79"}],"collection":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/users\/687"}],"replies":[{"embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/comments?post=79"}],"version-history":[{"count":1,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/posts\/79\/revisions"}],"predecessor-version":[{"id":80,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/posts\/79\/revisions\/80"}],"wp:attachment":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/media?parent=79"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/categories?post=79"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/tags?post=79"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Personal Accomplishment<\/b><\/h6>\n
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\n\n
\n <\/td>\n DynamoDB<\/b><\/td>\n Redis (Remote Dictionary Server)<\/b><\/td>\n<\/tr>\n \n General<\/span><\/td>\n Commercial system (pay)<\/span><\/td>\n Open-source, can be used for commercial purposes<\/span><\/td>\n<\/tr>\n \n Storage Model<\/span><\/td>\n Key-value<\/span><\/p>\n Key-value<\/span><\/p>\n \n Partitioning<\/span><\/td>\n Sharding<\/span><\/td>\n Sharding<\/span><\/td>\n<\/tr>\n \n Performance<\/span><\/td>\n 20+ million requests\/sec<\/span><\/p>\n In-memory database (requires large amount of memory to run quickly)<\/span><\/p>\n \n Durability & Availability<\/span><\/td>\n 3 separate zones<\/span><\/p>\n Open-source version not very durable (diskless DB)<\/span><\/td>\n<\/tr>\n \n Security<\/span><\/td>\n Encryption<\/span><\/td>\n No encryption<\/span><\/td>\n<\/tr>\n \n Use Cases<\/span><\/td>\n Applications that require high-speed data writing and reading<\/span><\/td>\n Session cache, chat, messaging, and queues<\/span><\/p>\n \n Pricing<\/span><\/td>\n On-demand mode: based on number of accesses<\/span><\/td>\n Free, open-source<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n About Schedule<\/b><\/h6>\n
Plans for Next Week<\/b><\/h6>\n