• Journal of the korean academy of Pediatric Dentistry
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• v.50 no.4
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• pp.483-494
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• 2023

This report presents two cases concerning strategies for improving denture retention in pediatric patients with oligodontia caused by hypohidrotic ectodermal dysplasia (HED). Both patients presented with multiple missing teeth, conical canines, alveolar bone atrophy, and a skeletal Class III tendency. In the first case, a modified form of conical-crown-retained denture was used to cover the canines. This approach was carried out without tooth extraction or coping. In the second case of severe alveolar bone resorption and a distally tilted lower left canine, the tooth was restored with a hybrid ceramic crown. It was subsequently converted into a clasp-retained removable partial denture, utilizing a suction mechanism. Both patients are currently receiving regular check-ups for the maintenance of their prosthetic appliances and the evaluation of their growth patterns. This study presents innovative prosthetic treatment methods for pediatric patients with HED who have inadequate denture retention.

• Journal of Society of Preventive Korean Medicine
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• v.19 no.2
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• pp.123-133
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• 2015

The new formular for herbal medicine-safety classification in terms of evidence-based medicine was developed and applied to evaluate various herbal medicines in the previous study. This study is aimed to evaluate the frequently-used herbal medicines inducing toxic metabolites or reactive intermediates(RI), such as Ligusticum wallichii Franch, Angelica sinensis, Glycyrrhizae Radix, Rehmanniae Radix, based on 6 safety grades calculated from human equivalent dose(HED)-based MOS(margin of safety). HED-based MOS can be explained as the ratio of theoretical ALD(approximate lethal dose) of human as $LD_1$(lethal dose of 1%)/ clinical maximum dose as $ED_{99}$(Effective dose of 99%). The herbal medicine showing the ratio less than 1 belongs to Class 1, but the herbal medicine showing the ratio more than 500 belongs to Class 6 with the lowest toxicity. As a result, they were evaluated as class 2 for Angelica sinensis and Glycyrrhizae Radix, class 3 for Ligusticum wallichii Franch and Rehmanniae Radix. These resultant grades for 4 herbal medicines were lower than the grade expected under consideration that these herbal medicines are used very frequently in oriental clinics. These low grades would be due to their ingredients which is biotransformed to toxic metabolites.

• Asian-Australasian Journal of Animal Sciences
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• v.30 no.10
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• pp.1396-1404
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• 2017

Objective: This study was determined the influence of virginiamycin supplementation on growth-performance and characteristics of digestion of cattle with decreasing dietary net energy value of the diet for maintenance ($NE_m$) from 2.22 to 2.10 Mcal/kg. Methods: Eighty crossbred beef steers ($298.2{\pm}6.3kg$) were used in a 152-d performance evaluation consisting of a 28-d adaptation period followed by a 124-d growing-finishing period. During the 124-d period steers were fed either a lesser energy dense (LED, $2.10Mcal/kg\;NE_m$) or higher energy dense (HED, $2.22Mcal/kg\;NE_m$) diet. Diets were fed with or without 28 mg/kg (dry matter [DM] basis) virginiamycin in a $2{\times}2$ factorial arrangement. Four Holstein steers ($170.4{\pm}5.6kg$) with cannulas in the rumen (3.8 cm internal diameter) and proximal duodenum were used in $4{\times}4$ Latin square experiment to study treatment effects on characteristics of digestion. Results: Neither diet energy density nor virginiamycin affected average daily gain (p>0.10). As expected, dry matter intake and gain efficiency were greater (p<0.01) for LED- than for HED-fed steers. Virginiamycin did not affect estimated net energy value of the LED diet. Virginiamycin increased estimated NE of the HED diet. During daylight hours when the temperature humidity index averaged $81.3{\pm}2.7$, virginiamycin decreased (p<0.05) ruminal temperature. Virginiamycin did not influence (p>0.10) ruminal or total tract digestion. Ruminal (p = 0.02) and total tract digestion (p<0.01) of organic matter, and digestible energy (p<0.01) were greater for HED vs LED. Ruminal microbial efficiency was lower (p<0.01) for HED vs LED diets. Conclusion: The positive effect of virginiamycin on growth performance of cattle is due to increased efficiency of energy utilization, as effects of virginiamycin on characteristics of digestion were not appreciable. Under conditions of high ambient temperature virginiamycin may reduce body temperature.

• Proceedings of the ESK Conference
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• 1997.04a
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• pp.270-280
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• 1997

원자력발전소의 인간공학적 설계 및 검토를 효과적으로 수행하기 위한 설계 현안관리체계 (Design Issue Management System;DIMS)를 구축하였다. DIMS는 세가지 기능을 갖도록 구성되었는데, 규제문건들로 부터 추출된 설계상의 인간공학적 요건들을 분석하고 관리하는 요건 분석 기능, 규제 기관, 운전원 및 설계자로 부터 제기된 설계 현안의 추적 기능, 설계상의 의사결정을 지원하기 위한 현안들의 중요도 평가 기능의 세부분으로 구성되었다. DIMS의 활용사례로 원자력발전소 감시계통의 일부인, 울진 3,4호기 CFMS(Critical Function Monitoring System) 화면설계 검토에 적용하였다. 주요 검토 업무로 CFMS 화면 설계에 대한 가용성 검토, 적합성 검토, 유효성 검증을 수행하였고, 이 과정을 통하여 울진 3,4호기 CFMS 화면 설계의 인간공학적 문제점(Human Engineering Discrepancy; HED0들을 찾아내었다. HED들은 문제의 심각성에 따라 조기 해결 요망, 가능한 한 조기 해결 요망, 장기적 해결요망의 세 그룹으로 분류되었다. HEE의 심각성 평가는 인간공학 전문가, 설계자, 운전원의 세 그룹에 의하여 평가되었다. 검토 결과 최종적으로 CFMS 화면에 대한 인간공학적 설계 개선의 근거 로 사용되었다.

• The KIPS Transactions:PartD
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• v.12D no.2 s.98
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• pp.283-288
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• 2005

Test case prioritization methods schedule test cases for execution when we can not practically run all test cases for regression testing. We proposed a new prioritization method that is based on historical execution and mr detection data. And we conducted an experiment to compare the proposed method with existing Random and LRU methods using the fault age under the long run environment as criterion. The experiment shows several interesting results. First, our results show that they are complementary. Random method shows good performance for programs that have many error-detectable test cases and HED is more effective for the programs that can be detected by very small amount of test cases. But LRU is more effective for the programs that have relatively medium amount of error detectable test cases. Next, the performance of prioritization method is affected by the size of test suites. Two experiments that have different size of test suites show considerably different fault ages and performance order. And lastly, the $20\%$ of test cases shows considerably good performance compared to the execution result of the full test suite.

• Journal of IKEEE
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• v.25 no.4
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• pp.716-720
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• 2021

In this study, we examine the availability of a cooling patch to enhance the output power of a hybrid energy device (HED) comprising a photovoltaic cell (PVC) and a thermoelectric generator (TEG). The cooling patch attached on the back of the TEG drops the temperature of the PVC via the TEG and makes a large thermal gradient across the TEG under irradiances in a range of 200 to 1000 W/m². The cooling patch is more effective for the output power of the HED as the irradiance increases, and it enhances the maximum output power of the HED to 42.1 mW at an irradiance of 1000 W/m². The increment in the maximum output power reaches 27% owing to the attachment of the cooling patch that does not consume any power.

• Journal of the Korean Chemical Society
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• v.48 no.4
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• pp.443-446
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• 2004

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.335-339
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• 2009

The purpose of this study is to propose a new Haptic Dial System (HDS) for Virtual Prototyping by developing upgraded systems and various Haptic effects. The Haptic Effect Design (HED) which gives users sensations like handling actual products has a function of controlling loudness by force and changing Haptic effects on GUI windows in real-time. In addition, the HED has another function of editing intervals to express Haptic effects as graphical force and notch on windows. Many kind of dial knob can be attached and removed easily for testing the performance of actual product designs. The HDS can be remotecontrolled through giving and taking the information between motor part and GUI part with TCP communication. The HDS can be applied to the output devices of Haptic effects as well as input-interfaces.

• KIPS Transactions on Software and Data Engineering
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• v.11 no.6
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• pp.255-266
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• 2022

The quality control of coarse aggregate among aggregates, which are the main ingredients of concrete, is currently carried out by SPC(Statistical Process Control) method through sampling. We construct a smart factory for manufacturing innovation by changing the quality control of coarse aggregates to inspect the coarse aggregates based on this image by acquired images through the camera instead of the current sieve analysis. First, obtained images were preprocessed, and HED(Hollistically-nested Edge Detection) which is the filter learned by deep learning segment each object. After analyzing each aggregate by image processing the segmentation result, fineness modulus and the aggregate shape rate are determined by analyzing result. The quality of aggregate obtained through the video was examined by calculate fineness modulus and aggregate shape rate and the accuracy of the algorithm was more than 90% accurate compared to that of aggregates through the sieve analysis. Furthermore, the aggregate shape rate could not be examined by conventional methods, but the content of this paper also allowed the measurement of the aggregate shape rate. For the aggregate shape rate, it was verified with the length of models, which showed a difference of ±4.5%. In the case of measuring the length of the aggregate, the algorithm result and actual length of the aggregate showed a ±6% difference. Analyzing the actual three-dimensional data in a two-dimensional video made a difference from the actual data, which requires further research.

• Journal of Chest Surgery
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• v.25 no.10
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• pp.1098-1101
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• 1992

Esophageal achalasia is a disease with characteristic disorder of esophageal motility. Also, this disorder is known to be predisposing factor of malignancy. Although the incidence of esophageal cancer in patients with achalasia varies widely, the incidence hed been reported from l% to 29% in many articles. It is known that delay in management of achalasia is believed to increase the risk of malignant degeneration. We experience a case with esophageal cancer complicating longstanding esophageal achalasia.