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Preserving Location Privacy of Connected Vehicles With Highly Accurate Location Updates
Lim, Jaemin,Yu, Hyunwoo,Kim, Kiyeon,Kim, Minho,Lee, Suk-Bok IEEE 2017 IEEE COMMUNICATIONS LETTERS Vol.21 No.3
<P>Connected vehicles are at risk of exposing their location history when using potentially untrusted location-based services (LBSs) in the driving process. We propose a method called mutually obfuscating paths (MOP) that enables vehicles to provide highly accurate realtime location updates to LBS while preventing the LBS from tracking vehicles. The instrument is to leverage connected vehicles' two network interfaces: in-car LTE Internet (for accessing LBS) and car-to-car Dedicated short-range communications (DSRC)-communication (for obfuscating their paths). The main idea of MOP is that vehicles, when appropriate, generate made-up but plausible location updates for each other, making their paths continuously branching off from the LBS' viewpoint. We evaluations show that MOP provides strong privacy protection even under continuous and highly accurate location updates.</P>
임재민 ( Lim Jaemin ) 한국중국언어학회 2023 중국언어연구 Vol.- No.109
This study analyzed the discussion points derived from previous research on the Chinese language curriculum and looked for the cause and reason. As a result of this study, the results show differences between researchers. The reason is that the timing of promulgation(notification) and implementation of the General Guideline of the National Curriculum and the Subject based Curriculum are different, the referenced materials have different standards, and there are errors in the information provided by the National Curriculum Information Center. When conducting research on the change of the Chinese language curriculum in the future, it is necessary to carefully consider various variables to select data, and the National Curriculum Information Center must re-examine its materials to ensure it can provide accurate information.
임재민 ( Lim Jaemin ) 한국중국언어학회 2022 중국언어연구 Vol.- No.102
This study conducted a simulated instruction for Pre-service Chinese teachers, and analyzed the development pattern of simulated instruction based on the self-reflection reports prepared by the Pre-service Chinese teachers. The self-reflection report consists of diagnostic evaluation and reflection evaluation. The components of diagnostic evaluation are introduction, motivation, progression, class composition, question-and-answer, voice, body movement, and media utilization, and the reflective evaluation elements are class preparation, progress, and evaluation. As a result of this study, the development pattern of simulated instruction could be classified into 6 types(development type, distributed type, incomplete type, stagnant type, regressive type and other type), and differences and commonalities were found in the simulated instruction.
林在敏(Lim Jaemin) 한국중어중문학회 2020 한국중어중문학회 우수논문집 Vol.- No.-
This study compared the National Curriculum and analyzed the reflection of the four core competencies in the secondary school Chinese textbooks, and then checked the hierarchy and connectivity of the curriculum and the textbooks. As a result of the study, it is confirmed that some of the problems raised were improved. But despite these efforts, some of the contents seem to need improvement in response to situations that can be revised at any time. The boundary between the 2015 revised National Chinese Curriculum’s content system and achievement standards is ambiguous. For this reason, the hierarchy between the 2015 Chinese textbook of middle school and high school seems to be somewhat lacking. The 2015 Chinese textbook for secondary schools reduced the amount of learning to reduce learning burden. However, the composition of the textbooks is complicated and confronts the problem of learning the same contents repeatedly in middle school and high school Chinese class. If we can set different order of core competency in middle school Chinese textbooks and high school Chinese textbooks, we will be able to secure hierarchy and link between the curriculum and the textbook.