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Transverse Flux Machine Optimization by 2D FEM Program
Tobias Schmalen,DOHYUN KANG(강도현),JIYOUNG LEE(이지영) 대한전기학회 2016 대한전기학회 학술대회 논문집 Vol.2016 No.3
This paper presents the development of optimizations of a Transversal Flux Permanent Magnet Machine with different variations of the ratio between stator teeth width and pole pitch width and variation of the ratio permanent magnet thickness to pole pitch width. A comparison of using different core materials and different permanent magnets, Also a variation of the airgap and changing of the applied current shape-either DC or sinusoidal- will be made. All comparisons will be based on thrust force density simulated by 2D FEM program.
Tobias C. Hinse,김우균,안상현,이재근,박준형,이영우,정우정,우상민 한국천문학회 2017 天文學論叢 Vol.32 No.3
We give a detailed description of the installation and operation of a double-station meteor detectionsystem which formed part of a research & education project between Korea Astronomy Space ScienceInstitute (KASI) and Daejeon Science Highschool. A similar system is currently not existing in SouthKorea. A total of six light-sensitive CCD cameras were installed with three cameras at SOAO and threecameras at BOAO observatory. A double-station observation of a meteor event enables the determinationof the three-dimensional heliocentric orbit in space. This project was initiated in response to the Jinjureball event in March 2014. The cameras were installed in October/November 2014. The two stationsare identical in hardware as well as software. Each station employes sensitive \Watec-902H2" cameras incombination with relatively fast f/1.2 lenses. Various elds of views were used for measuring di erencesin detection rates of meteor events. We employed the SonotaCo UFO software suite for meteor detectionand their subsequent analysis. The system setup as well as installation/operation experience is describedand rst results are presented. We also give a brief overview of historic as well as recent meteor (fall)detections in South Korea. For more information please consult http://meteor.kasi.re.kr.
Ch’oe Namsǒn and Identity Construction through Negotiation with the Colonizer
Tobias Scholl 고려대학교 한국사연구소 2019 International Journal of Korean History Vol.24 No.1
This paper takes a closer look at Ch’oe Namsŏn’s construction of Korean identity during the colonial period. Ch’oe was ambiguous towards Japan, seeing it as many other intellectuals did, as a model for Korea’s modernization, and was aware that Japan would be both Korea’s “oldest friend” and “biggest obstacle” in this regard. After his imprisonment for his role in the Korean independence movement in 1919, he started to cooperate with the Japanese to influence colonial knowledge production and therefore decided to “negotiate” directly with the colonizer. In his “Treatise on Purham culture,” Ch’oe included Japan in the same cultural sphere and saw it as less of Other than the West and China. While his theses and arguments were based on Japanese research and written in Japanese, Ch’oe maintained a Korean identity within the colonial setting not by a “negation” of Japanese research, but by “negotiation” through its reinterpretation and autoethnography. Due to his referring to Japanese scholars and due to the ambiguity of his mimicry his work can be considered “at once resemblance and menace,” and simultaneously as collaboration and resistance.
Tobias Graf,Jan-Frederik Güth,Christian Diegritz,Anja Liebermann,Josef Schweiger,Oliver Schubert 대한치과보철학회 2021 The Journal of Advanced Prosthodontics Vol.13 No.6
PURPOSE. The aim of this study was to evaluate the efficiency of occlusal and interproximal adjustments of single implant crowns (SIC), comparing a digital cast-free approach (CF) and a protocol using 3D printed casts (PC). MATERIALS AND METHODS. A titanium implant was inserted at position of lower right first molar in a typodont. The implant position was scanned using an intraoral scanner and SICs were fabricated accordingly. Ten crowns (CF; n = 10) were subject to a digital cast-free workflow without any labside occlusal and interproximal modifications. Ten other identical crowns (PC) were adjusted to 3D printed casts before delivery. All crowns were then adapted to the testing model, simulating chair-side adjustments during clinical placement. Adjustment time, quantity of adjustments, and contact relationship were assessed. Data were analyzed using SPSS software (P < .05). RESULTS. Median and interquartile range (IQR) of clinical adjustment time was 02:44 (IQR 00:45) minutes in group CF and 01:46 (IQR 00:21) minutes in group PC. Laboratory and clinical adjustment time in group PC was 04:25 (IQR 00:59) minutes in total. Mean and standard deviation (±SD) of root mean squared error (RMSE) of quantity of clinical adjustments was 45 ± 7 μm in group CF and 34 ± 6 μm in group PC. RMSE of total adjustments was 61 ± 11 μm in group PC. Quality of occlusal contacts was better in group CF. CONCLUSION. Time effort for clinical adjustments was higher in the cast-free protocol, whereas quantity of modifications was lower, and the occlusal contact relationship was found more favourable.
Cross-Cultural Management in China
Tobias Cramer 한국유통과학회 2018 Asian Journal of Business Environment (AJBE) Vol.8 No.1
Purpose - This paper discusses cross-cultural management (CCM) in China and how its business students get prepared by university cross-cultural management courses for an international market. Research design, data, and methodology – It was therefore decided to do an online content analysis looking at CCM courses offered by a number of Chinese universities first, and second to conduct a quantitative survey on CCM courses as well as topics among Chinese undergraduate business students at a large Eastern Chinese university. Results - From fundamental aspects, seven Chinese cultural standards emerge which highly influence the behaviour of the Chinese. There is a tendency to imply the integration of not only local but also cross cultural issues in academic management courses. Besides Hong Kong, there are currently 17 Chinese universities and schools accredited by the Association to Advance Collegiate Schools of Business (AACSB) that explicitly requires cross-cultural management competencies in undergraduate and graduate degree programmes. In addition, the study confirmed that two-third of the sample (Chinese undergraduate business students) had taken cross-cultural management courses. Conclusions - The results of this research have made it clear that Chinese universities and schools are aware of the importance of cross-cultural management competencies.
Reliability and Validity of the Embouchure Dystonia Severity Rating Scale
Tobias Mantel 대한파킨슨병및이상운동질환학회 2023 Journal Of Movement Disorders Vol.16 No.2
Embouchure dystonia (ED) is a task-specific movement disorder that leads to loss of fine motor control of the embouchure and tongue muscles in wind musicians. In contrast to musicians’ hand dystonia, no validated severity rating for ED exists, posing a major obstacle for structured assessment in scientific and clinical settings. The aim of this study is to validate an ED severity rating scale (EDSRS) allowing for a standardized estimation of symptom severity in ED.