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Ride Comfort Analysis of a Vehicle Based on Continuous Wavelet Transform
Lee, Sang-Kwon,Son, Choong-Yul The Korean Society of Mechanical Engineers 2001 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.15 No.5
This paper presents the ride comfort analysis of a vehicle based on wavelet transform. Traditionally, the objective evaluation of impact harshness is based on the vibration dose value (VDV) and frequency weighting method. These methods do not consider the damping effect of the suspension system of a vehicle. In this paper, the damping is estimated using wavelet transform based on Morlet mother wavelet and its effect is considered for the subjective evaluation of impact harshness of a car.
Stereotactic vacuum-assisted breast biopsy under lateral decubitus position
Sang Hyup Lee,Youn Joo Jung,Hyuk Jae Jung,Jee Yeon Kim,Ki Seok Choo,Kyung Jin Nam,Hyun Yul Kim 대한외과학회 2015 Annals of Surgical Treatment and Research Vol.90 No.1
Purpose: Stereotactic vacuum-assisted breast biopsy (VAB) has been established as a standard method for histological diagnosis of microcalcification or nonpalpable breast lesions on mammography. Generally, the procedure has been done under the prone position or upright sitting position. We herein attempt to evaluate clinical utility of Stereotactic VAB under lateral decubitus position. Methods: One hundred six women (mean age, 51.2 years) with mammographically detected microcalcification underwent lateral decubitus positioning VAB using the 8G probe. In all cases, we obtained mammography specimens for identification of microcalcification and postprocedure mammography. We reviewed mean procedure time, pieces of specimen, pathology and follow-up mammography. Results: The procedure took approximately 20 minutes (range, 15–24 minutes). Average number of obtained specimens was 8.5 pieces (range, 6–12 pieces). Microcalcifications were confirmed in both specimen mammography and microscopic slides. Of 106 cases, 10 cases were diagnosed as ductal carcinoma in situ. Additional surgical management was performed. Atypical ductal hyperplasias were found in 8 cases, and fibrocystic changes in 88 cases. Conclusion: Stereotactic VAB using the 8G probe under lateral decubitus position does not need a dedicated table, and is easier to maintain the position. Also, this procedure is accurate and safe. Thus, stereotactic VAB using the 8G probe under lateral decubitus position will be a useful method for diagnosis of microcalcification or nonpalpable breast lesions on mammography.
Detection of Soybean Mosaic Virus Using RT-PCR
Yul-Ho Kim,Ok-Sun Kim,Bong-Choon Lee,Jae-Hwan Roh,Myoung-Ki Kim,Dae-Joon Im,Il-Bong Hur,Sang-Chul Lee 韓國作物學會 1999 Korean journal of crop science Vol.44 No.3
Reverse transcription and polymerase chain reaction (RT-PCR) assay was used to detect SMV strains. A pair of oligonucleotide primers were designed to include the cylindrical inclusion (CI) coding region between 4,176 to 5,560 nt. Amplification from the total RNA extracted from infected plants with SMV yielded a 1,385 bp DNA fragment. RT-PCR was shown to be 103 times more sensitive than the ELISA assay and it could detect a virus in 10-6 dilution. Restriction enzyme analysis of RT- PCR products using EcoR I showed that SMV isolates were classified into six groups according to the patterns of restriction fragments.
Case Report : Ulcerated Perianal Infantile Hemangioma Treated with Propranolol
( Sang Jin Oh ),( Han Eul Lee ),( Jong Suk Lee ),( Sung Yul Lee ),( Kyung Bae Park ) 대한피부과학회 2013 大韓皮膚科學會誌 Vol.51 No.2
Infantile hemangioma is a self-resolving benign tumor that commonly requires no intervention. Despite its distinctive, self-limiting course, infantile hemangiomas may result in ulcerations that cause pain, potential scarring, bleeding, and infection. Active treatment is usually required to manage these lesions. The discovery of propranolol in the treatment of infantile hemangioma was described in 2008 by L?aut?-Labr?ze, et al. Since then, its effectiveness and safety have been confirmed by several cases, and replacing systemic corticosteroids as a first-line therapy. Herein, we report the successful treatment of children with ulcerated perianal infantile hemangioma with propranolol. (Korean J Dermatol 2013;51(2):155∼157)
The Design and Implementation of Anomaly Traffic Analysis System using Data Mining
Lee, Se-Yul,Cho, Sang-Yeop,Kim, Yong-Soo Korean Institute of Intelligent Systems 2008 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.8 No.4
Advanced computer network technology enables computers to be connected in an open network environment. Despite the growing numbers of security threats to networks, most intrusion detection identifies security attacks mainly by detecting misuse using a set of rules based on past hacking patterns. This pattern matching has a high rate of false positives and can not detect new hacking patterns, which makes it vulnerable to previously unidentified attack patterns and variations in attack and increases false negatives. Intrusion detection and analysis technologies are thus required. This paper investigates the asymmetric costs of false errors to enhance the performances the detection systems. The proposed method utilizes the network model to consider the cost ratio of false errors. By comparing false positive errors with false negative errors, this scheme achieved better performance on the view point of both security and system performance objectives. The results of our empirical experiment show that the network model provides high accuracy in detection. In addition, the simulation results show that effectiveness of anomaly traffic detection is enhanced by considering the costs of false errors.
Sung-Yul Lee,Ye-Jin Jung,Tak Heon Oh,최응호 대한피부과학회 2011 Annals of Dermatology Vol.23 No.-
Acrodermatitis enteropathica is classified as a congenital autosomal recessive type and an acquired transient type. This disease manifests as acral and periorificial dermatitis,alopecia, intractable diarrhea, and failure to thrive. Whereas the autosomal hereditary type is caused by malabsorption of zinc in the intestine, the acquired type is caused by low nutritional support or decreased peripheral release of zinc from blood. We experienced a case of a 5-month old, breast feeding, full-term female presenting with only acral bullous dermatitis without diarrhea, periorificial dermatitis and an abnormal serum zinc level. (Ann Dermatol 23(S1) S88∼S90, 2011)
Prognostic Factors of Clinical Outcomes in Patients with Spontaneous Thalamic Hemorrhage
Lee, Sang-Hoon,Park, Kyung-Jae,Kang, Shin-Hyuk,Jung, Yong-Gu,Park, Jung-Yul,Park, Dong-Hyuk International Scientific Literature, Inc. 2015 Medical science monitor Vol.21 No.-
<P><B>Background</B></P><P>Intracerebral hemorrhage (ICH) is a well-known condition, but ICH restricted to the thalamus is less widely studied. We investigated the prognostic factors of thalamic ICHs.</P><P><B>Material/Methods</B></P><P>Seventy patients from January 2009 to November 2014 were retrospectively reviewed. Patients who demonstrated spontaneous ICH primarily affecting the thalamus on initial brain computed tomography (CT) were enrolled. Patients were categorized into 2 groups based on their Glasgow Outcome Scale (GOS) scores. Various presumptive prognostic factors were analyzed to investigate relationships between various clinical characteristics and outcomes.</P><P><B>Results</B></P><P>Of the enrolled patients, 39 showed a GOS of 4–5, and were categorized as the good outcome group, while another 31 patients showed a GOS of 1–3 and were categorized as the poor outcome group. Initial GCS score, calculated volume of hematoma, presence of intraventricular hemorrhage (IVH), coexisting complications, hydrocephalus, performance of external ventricular drainage, and modified Graeb’s scores of patients with IVH were significantly different between the 2 groups. In multivariate analysis, among the factors above, initial GCS score (P=0.002, Odds ratio [OR]=1.761, Confidence interval [CI]=1.223–2.536) and the existence of systemic complications (P=0.015, OR=0.059, CI=0.006–0.573) were independently associated with clinical outcomes. Calculated hematoma volume showed a borderline relationship with outcomes (P=0.079, OR=0.920, CI=0.839–1.010).</P><P><B>Conclusions</B></P><P>Initial GCS score and the existence of systemic complications were strong predictive factors for prognosis of thalamic ICH. Calculated hematoma volume also had predictive value for clinical outcomes.</P>
Lee, Yu Young,Park, Hyang Mi,Hwang, Tae Young,Kim, Sun Lim,Kim, Mi Jung,Lee, Seuk Ki,Seo, Min Jung,Kim, Kee Jong,Kwon, Young‐,Up,Lee, Sang Chul,Kim, Yul Ho John Wiley Sons, Ltd 2015 Journal of the Science of Food and Agriculture Vol.95 No.4
<P><B>Abstract</B></P><P><B>BACKGROUND</B></P><P>Tocopherols are crucial lipid‐soluble antioxidants and essential nutrients. There is increasing interest in the biofortification of crops with vitamin E for reducing micronutrient malnutrition. However, relatively little is known about the development of soybean cultivars with high levels of tocopherol through combined breeding.</P><P><B>RESULT</B></P><P>Tocopherol contents of seeds and germinating seeds of 28 Korean soybean cultivars were analyzed and evaluated for health‐promoting activities. Total tocopherol concentrations ranged from 203.9 to 503.1 µg g<SUP>−1</SUP> in seeds and from 20.1 to 230.1 µg g<SUP>−1</SUP> in germinating seeds. The traditional landraces of HaNagari (HN, 503.1 µg g<SUP>−1</SUP>), Orialtae (OL, 486.6 µg g<SUP>−1</SUP>), SuMoktae (SM, 476.5 µg g<SUP>−1</SUP>) and SoRitae (SR, 475.5 µg g<SUP>−1</SUP>) showed high levels of tocopherol content. The contents of the four isomers of tocopherol in seeds and germinating seeds were correlated with lipid peroxidation. The γ‐ and δ‐tocopherol contents in seeds were related to 1,1‐diphenyl‐2‐picrylhydrazyl free radical scavenging activity (0.434; <I>P</I> < 0.01 and 0.373; <I>P</I> < 0.05).</P><P><B>CONCLUSION</B></P><P>Total tocopherol content was higher in soybean landraces as compared with modern cultivars developed by cross‐breeding. These results suggest that soybean breeding is necessary to increase tocopherol levels. © 2014 Society of Chemical Industry</P>