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변형된 비속어 탐지를 위한 토큰 기반의 분류 및 데이터셋
고성민 ( Sungmin Ko ),신유현 ( Youhyun Shin ) 한국정보처리학회 2024 정보처리학회논문지. 소프트웨어 및 데이터 공학 Vol.13 No.4
Traditional profanity detection methods have limitations in identifying intentionally altered profanities. This paper introduces a new method based on Named Entity Recognition, a subfield of Natural Language Processing. We developed a profanity detection technique using sequence labeling, for which we constructed a dataset by labeling some profanities in Korean malicious comments and conducted experiments. Additionally, to enhance the model's performance, we augmented the dataset by labeling parts of a Korean hate speech dataset using one of the large language models, ChatGPT, and conducted training. During this process, we confirmed that filtering the dataset created by the large language model by humans alone could improve performance. This suggests that human oversight is still necessary in the dataset augmentation process.
고혈압을 보이는 젊은 군인에서의 이차성 고혈압 유병률: 단일기관 연구
고성민 ( Sungmin Ko ),신재환 ( Jaehwan Shin ),성시윤 ( Siyoun Sung ) 국군의무사령부 2020 대한군진의학학술지 Vol.51 No.1
Objective; Secondary hypertension is known to account for about 5-10% of hypertension. Recently, a number of soldiers complaining of high blood pressure have been found in military health checkups. This study aimed to report the prevalence of secondary hypertension among young soldiers in a single military hospital. Methods; We obtained clinical information of young hypertensive soldiers under 40 years of age who visited the Armed Forces Chuncheon Hospital from 2016 to 2018. Among them, we retrospectively analyzed the medical records of soldiers who underwent secondary hypertension screening due to high blood pressure. Results; Between January 2016 and December 2018, a total of 699 hypertensive soldiers under 40 years of age visited our hospital. Among them, 299(100% men) soldiers underwent secondary hypertension screening. The mean age was 21.6 ± 3.1 years old. The mean blood pressure levels were 154.5 / 91.5 mmHg with 124 soldiers(41.5%) of stage 2 hypertension, 157 soldiers(52.5%) of stage 1 hypertension, and 18 soldiers(6%) of prehypertension. Secondary hypertension was diagnosed in 2 soldiers among 299 cases. The cause of secondary hypertension was identified as hyperthyroidism in 2 soldiers. Conclusions; The prevalence of secondary hypertension in young soldiers under 40 years of age with hypertension was 0.3%.
Digital Memory Versatility of Fully π-Conjugated Donor–Acceptor Hybrid Polymers
Ko, Yong-Gi,Kim, Dong Min,Kim, Kyungtae,Jung, Sungmin,Wi, Dongwoo,Michinobu, Tsuyoshi,Ree, Moonhor American Chemical Society 2014 ACS APPLIED MATERIALS & INTERFACES Vol.6 No.11
<P>The fully π-conjugated donor–acceptor hybrid polymers Fl-TPA, Fl-TPA-TCNE, and Fl-TPA-TCNQ, which are composed of fluorene (Fl), triphenylamine (TPA), dimethylphenylamine, alkyne, alkyne-tetracyanoethylene (TCNE) adduct, and alkyne-7,7,8,8-tetracyanoquinodimethane (TCNQ) adduct, were synthesized. These polymers are completely amorphous in the solid film state and thermally stable up to 291–409 °C. Their molecular orbital levels and band gaps vary with their compositions. The TCNE and TCNQ units, despite their electron-acceptor characteristics, were found to enhance the π-conjugation lengths of Fl-TPA-TCNE and Fl-TPA-TCNQ (i.e., to produce red shifts in their absorption spectra and significant reductions in their band gaps). These changes are reflected in the electrical digital memory behavior of the polymers. Moreover, the TCNE and TCNQ units were found to diversify the digital memory modes and to widen the active polymer layer thickness window. In devices with aluminum top and bottom electrodes, the Fl-TPA polymer exhibits stable unipolar permanent memory behavior with high reliability. The Fl-TPA-TCNE and Fl-TPA-TCNQ devices exhibit stable unipolar permanent memory behavior as well as dynamic random access memory behavior with excellent reliability. These polymer devices were found to operate by either hole injection or hole injection along with electron injection, depending on the polymer composition. Overall, this study demonstrated that the incorporation of π-conjugated cyano moieties, which control both the π-conjugation length and electron-accepting power, is a sound approach for the design and synthesis of high-performance digital memory polymers. The TCNE and TCNQ polymers synthesized in this study are highly suitable active materials for the low-cost mass production of high-performance, polarity-free, programmable, volatile, and permanent memory devices that can be operated with very low power consumption, high ON/OFF current ratios, and high reliability.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/aamick/2014/aamick.2014.6.issue-11/am5013134/production/images/medium/am-2014-013134_0012.gif'></P>
Sungmin Jeong,Sanghoon Ko,Jeom-sig Lee,Suyong Lee 한국산업식품공학회 2016 학술대회 및 심포지엄 Vol.2016 No.04
As one of the staple crops, rice has been widely applied to value-added products, giving the food industry new avenues of use. Although the quality attributes of various rice products have been reported, there is a lack of detailed information on the rheological behaviors of rice products during digestion that are related to their bioaccessibility in the human body. In this study, three rice varieties with different amylose contents were utilized to produce flours and extruded noodles. In-vitro methods simulating starch digestion processes were then established to monitor their oral-gastric-intestinal rheological behaviors. The rice flour with high amylose content exhibited lower values of water absorption index/swelling power and higher pasting parameters that were in good agreement with the Mixolab thermo-mechanical results. The extruded rice noodles showed lower cooking loss and higher hardness with increasing levels of amylose. When the in-vitro viscosities of rice flours and noodles were measured using a rotational rheometer with the custom-made starch cell, their viscosities had a tendency to decrease as the in-vitro digestion progressed. Specifically, the rice samples with high amylose content exhibited higher viscosity than those with low amylose content under the simulated oral, gastric, and intestinal conditions. Hence, this study was conducted to investigate the physicochemical and in-vitro rheological properties of rice flours and extruded noodles with different amylose content. The results provided a promising opportunity for the food industry to study in-vitro digestion of rice-based products with the advantages of being more rapid and less expensive.
Image-guided Positioning Robot for Single-port Brain Surgery Robotic Manipulator
Sungmin Seung,Pengxin Liu,Sukho Park,Jong-Oh Park,Seong Young Ko 제어로봇시스템학회 2013 제어로봇시스템학회 국제학술대회 논문집 Vol.2013 No.10
The paper presents an image-guided positioning robot for a single-port brain surgery robotic manipulator. Due to its limited workspace, the robotic manipulator that performs a fine operation needs to be precisely and stably positioned near the target area. For this purpose, an accurate guidance of a positioning robot to the target position using CT images is developed. The developed brain surgery robot system consists of a single-port robotic manipulator, a positioning robot, an optical tracking system, a brain phantom, and an image model obtained from the pre-operative CT data of the brain phantom. The positioning robot supports the single-port robotic manipulator and positions it near a surgical site. To guide the surgical manipulator into a variety of positions and orientations, a 6-DOF serial robot is introduced as the positioning robot. The coordinate transformations among the image model, the brain phantom and the positioning robot and the single-port robotic manipulator are obtained to guide the positioning robot and to perform the registration between CT image of the phantom and the real phantom. The simple algorithm to specify the target location of the positioning robot in CT coordinate system is proposed. Using the coordinate transformations and the desired target location and orientation, it is possible to guide the positioning robot into the desired target position and orientation. The experimental result shows the targeting error of the proposed method is sufficiently small.