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후두내시경 영상에서의 라디오믹스에 의한 병변 분류 연구
박준하,김영재,우주현,김광기,Park, Jun Ha,Kim, Young Jae,Woo, Joo Hyun,Kim, Kwang Gi 대한의용생체공학회 2022 의공학회지 Vol.43 No.5
Laryngeal disease harms quality of life, and laryngoscopy is critical in identifying causative lesions. This study extracts and analyzes using radiomics quantitative features from the lesion in laryngoscopy images and will fit and validate a classifier for finding meaningful features. Searching the region of interest for lesions not classified by the YOLOv5 model, features are extracted with radionics. Selected the extracted features are through a combination of three feature selectors, and three estimator models. Through the selected features, trained and verified two classification models, Random Forest and Gradient Boosting, and found meaningful features. The combination of SFS, LASSO, and RF shows the highest performance with an accuracy of 0.90 and AUROC 0.96. Model using features to select by SFM, or RIDGE was low lower performance than other things. Classification of larynx lesions through radiomics looks effective. But it should use various feature selection methods and minimize data loss as losing color data.
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Siloxane - Modified Epoxy Resin 의 특성 : 2 . DGEBA / Siloxane 을 기초로 한 Prepolymer 경화사편의 강인성
박준하,이무재,임정수,김공수 ( Jun Ha Park,Moo Jae Lee,Jeoung Su Lim,Kong Soo Kim ) 한국공업화학회 1997 응용화학 Vol.1 No.1
Siloxane prepolymer were synthesized by epoxy terminated siloxane oligomer onto diamino diphenylmethane(DDM) and bisphenol A(BPA) of melting state. The cured specimen of based siloxane prepolymer were prepared by mixing diglycidyl ether bisphenol A(DGEBA) with 5∼20phr of siloxane prepolymer at reaction temp. 150℃. In DGEBA/polysiloxane system, cured specimen are investigated on mechanical and thermal properties. As a result on mechanical properties, flexural and impact strength were increased that siloxane prepolymer blend ratio increased, on the other hand Tg, thermal expansion coeffi. (α) and modulus were decreased. The morphology of DGEBA/DDM were showed directly cross-section of fraxture energy flow and DGEBA/SiO system were investigated heterogeneously domain forms.
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LBO와 관련한 개정 상법의 법적 연구 -주요 개정 상법규정들을 중심으로-
박준하 ( Jun Ha Park ) 홍익대학교 법학연구소 2014 홍익법학 Vol.15 No.1
This thesis studies the legal issues of Korean existing laws as Commercial Act in relation to LBO and discusses the problems of Protection for Minority Shareholders in LBO transaction. Generally, LBO is a type of M&A and in the transaction structure of LBO, the assets of M&A target company are placed as collateral for an outside supply of the funds to takeover the target company. This investment scheme has intrinsic risk of increasing the debt ratio. And in an LBO, the acquiring company establishes a special-purpose company (SPC) and then causes the SPC to obtain external financing, which is used to acquire the target company. The target company either furnishes its assets as collateral for the financing or is merged into the SPC, after which a relisting on a stock exchange is made. The fundamental characteristic of LBO is presented by the fact that the acquirement of the shares or assets of the target company is effected by utilizing a significant amount of debt and a vary low quantity of equity capital and that assets of the target company are put up as collateral for group of buyers to secure the loans. Squeeze-out system, introduced by the revised commercial act in 2011, has many problems with protection of minority shareholders of the target company related Going Private Transaction in LBO. In Korean, the Squeeze-out system exists Cash-out merger, compulsory acquisition of minority shares, appraisal rights. Protection of minority shareholders depends on the secured fairness of compensation estimate granted for them during a corporate`s merger and fair process of such transactions. And MBO(Management Buyout) raise many legal issues. This LBO`s type has problems arising from director`s self-transactions by his or her violation of obligations, company`s self-acquisition of own shares by provision of security or guarantee of an obligation, insider trading of the target company`s the director.
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진피 멜라닌세포과오종 (dermal melanocyte hamartoma)
박준하 ( Jun Ha Park ),이호섭 ( Ho Sup Lee ),김상백 ( Sang Baik Kim ),유동수 ( Bong Su Ryu ),김경문 ( Kyung Moon Kim ),김일환 ( Il Hwan Kim ) 대한피부과학회 2003 대한피부과학회지 Vol.41 No.2
Dermal melanocytosis is characterized by the presence of ectopic melanocytes in the dermis. Dermal melanocytosis assumes several morphologic forms, including the Mongolian spot, the blue nevus, the nevus of Ota, the nevus of Ito and dermal melanocytic ham
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박준하 ( Park Jun Ha ),김일환 ( Kim Il Hwan ) 대한피부과학회 2003 대한피부과학회지 Vol.41 No.9
Background: Although vitiligo is generally recognized as a single entity, the etiology is complex. There have been three hypotheses to explain vitiligo, (1) neural hypothesis, (2) the self-destruct hypothesis, and (3) the autoimmune hypothesis. And recent
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박준하(Park, Jun-Ha) 한양법학회 2014 漢陽法學 Vol.25 No.1
Since 2011, the Korean International Financial Reporting Standard (hereinafter, K-IFRS) had great impacts on the field of accounting law. and Korea Commercial Law had strict Dividend of profits for creditor protection. So the unrealized profits must be deducted in the calculation of distributable earnings. The Article 462 under the commercial Law regulates the deduction of unrealized gains. However, this rule has caused a lot of problems. Especially, exporting companies, banks and securities companies will not have distributable profits. In order to solve this problem, corporate hedging transactions occurring in connection with unrealized profits and unrealized losses allow to offset against each other. Specifically, Unrealized gains and unrealized losses associated with each other derivative-linked securities and derivatives that occur in the case should be allowed to offset. These provisions are available for a reasonable dividend. In the case of hedging transactions linked structured transactions must permit to offset in the Dividend.
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