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Kwon, Hyemi,Jeon, Min Ji,Kim, Won Gu,Park, Suyeon,Kim, Mijin,Song, Dong Eun,Sung, Tae-Yon,Yoon, Jong Ho,Hong, Suck Joon,Kim, Tae Yong,Shong, Young Kee,Kim, Won Bae Bioscientifica 2017 European journal of endocrinology Vol.176 No.4
<B>Objective</B><P>Papillary thyroid microcarcinoma (PTMC) accounts for most of the increase in thyroid cancer in recent decades. We compared clinical outcomes and surgical complications of lobectomy and total thyroidectomy (TT) in PTMC patients.</P><B>Design and methods</B><P>In this retrospective individual risk factor-matched cohort study, 2031 patients with PTMC were initially included. Patients who underwent lobectomy or TT were one-to-one matched according to individual risk factors, including age, sex, primary tumor size, extrathyroidal extension, multifocality and cervical lymph node (LN) metastasis.</P><B>Results</B><P>In total, 688 patients were assigned to each group. During the median 8.5 years of follow-up, 26 patients (3.8%) in the lobectomy group and 11 patients (1.6%) in the TT group had recurrences. The relative risk of recurrence was significantly less in the TT than that in the lobectomy group (hazard ratio (HR) 0.41; 95% confidence interval (CI) 0.21-0.81; <I>P</I> = 0.01). Most recurrences (84.6%) in the lobectomy group occurred in the contralateral lobe, and all patients were disease-free after completion of thyroidectomy. There were no significant differences in recurrence-free survival between the two groups after exclusion of contralateral lobe recurrences (HR, 2.75; 95% CI, 0.08-8.79; <I>P</I> = 0.08). There were significantly more patients with transient and permanent hypoparathyroidism in the TT than that in the lobectomy group (<I>P</I> < 0.001).</P><B>Conclusions</B><P>Lobectomy could be appropriate for most patients with PTMC when there is no evidence of extrathyroidal disease in the preoperative work-up. Preoperative and postoperative imaging studies are important for patients who undergo lobectomy for PTMC, because most recurrences are in the contralateral lobe.</P>
증례 : 소화기 ; 내시경 췌관 스텐트 삽입술로 치료된 췌관-흉막루
권혜미 ( Hyemi Kwon ),이지향 ( Jihyang Lee ),최은지 ( Eunji Choi ),김효정 ( Hyojung Kim ),최준혁 ( Jun Hyuk Choi ),변재호 ( Jae Ho Byun ),김명환 ( Myung Hwan Kim ) 대한내과학회 2014 대한내과학회지 Vol.87 No.4
Pancreatic duct disruption associated with pancreatitis can lead to the development of pseudocysts, pancreatic ascites, and pleural effusion. A 50-year-old male presented with a 1-month history of postprandial epigastric pain. A chest X-ray showed right pleural effusion. Diagnostic thoracentesis revealed an amylase-rich exudate consistent with pancreatic effusion. Magnetic resonance cholangiopancreatography demonstrated a pancreaticopleural fistula tract, and endoscopic retrograde pancreatography confirmed the presence of pancreatic ductal disruption and leakage at the genu portion. The pancreaticopleural fistula was treated by transpapillary pancreatic stenting. Percutaneous drainage of the pleural effusion and octreotide injection were also performed. Follow-up endoscopic retrograde pancreatography at 8 weeks revealed no leakage of contrast media from the main pancreatic duct. Endoscopic pancreatic stenting can be an efficacious nonsurgical treatment of pancreaticopleural fistula following pancreatitis. (Korean J Med 2014;87:455-460)
( Hyemi Gong ),( Yijeong Kwon ) 한국유아교육학회 2021 정기학술대회 논문집 Vol.2021 No.1
The objective of this study is to observe the educational experiences of the parents who chose to send their children to a small kindergarten class at the Haneul Elementary School and how that experience affected them. First, it was found that the expectations of parents in relation to selecting a small kindergarten class for their children is based on having abundant space for them, as well as a more free environment for them to express themselves and their opinions. Second, children developed close relationships with both their peers and their teachers while enjoying their freedom and happiness. Third, parents strengthened their beliefs in regards to education due to their positive experiences with the specialized education that only small classes have. Overall, it would appear as though a smaller number of children per class would increase the effectiveness of education. Additionally, satisfaction and happiness derived from a beautiful and peaceful environment and landscape positively impacts both parents and their children. Through this study, the characteristics of children as individuals pursuing freedom and happiness can be understood through the reduction of the number of students in a single class. The objective of the study, therefore, is to expand that understanding, as well as to expand opportunities for growing children to enjoy nature to increase their happiness and support their education. As a whole, this study is meant to contribute to the development of public education.
Communications with Customers in the Service Industry: A Case of Service Sales Manual Development
Hyemi Hwang,Dohee Kwon 한국경영커뮤니케이션학회 2020 Business Communication Research and Practice Vol.3 No.2
Objectives:This study aims to introduce a development case of empirical service manuals utilized by service corporations and help service managers and leaders for their future effective management on moment of truth (MOT). Methods:In order to develop a duty-free service manual, the 2019 MOT monitoring evaluation, customer satisfaction survey, voice of customers, and a previous service manual developed in 2013 were analyzed. The requirements of executives and managers were taken into consideration. The service standards were set with the cooperation of subject matter experts, and the contents of the service manual were revised to reflect the opinions of employees. Results:The standard behaviors and guidelines at each stage of the sales process were organized, and the best cases for sales conversations were shared at the first and the second workshops. The developed service manual was distributed to the division managers and the sales directors, and training was provided for effective use of the manual. Conclusions:The developed manual is used for the employees to teach them about the service process and customer service skills during their customer satisfaction training and the new employee training. A developed service manual should be utilized by employees not only published as a booklet. In order to promote the implementation of service manuals in a real MOT, the continuous monitoring of employee’s behavior according to the service manual and immediate feedback on employee performance are required.
정혜미(Hyemi Jung),장민경(Minkyoung Chang),권아림(ARim Kwon),박연우(Yeonwoo Park) 한국HCI학회 2010 한국HCI학회 학술대회 Vol.2010 No.1
1723 세대인 Young Generation 을 대상으로 한 휴대폰 개발을 목적으로 Target 에 대한 심층적 생활연구를 통해 1723 세대에 소구 할 수 있는 가치 있는 결과를 얻을 수 있다. 3 step 에 거쳐 진행된 생활연구를 통해 얻어진 1723 세대의 핵심 코드 및 휴대폰 UI concept 에 따라 Sensitive UI 와 Practical UI 두 개의 category 를 mobile User Interface Design 을 위한 guideline 으로 제안한다. 첫째, Sensitive UI 의 경우 자신을 표현하고자 하는 욕구가 강하며, 어른세대 및 유소년 세대와 구분되어야 한다는 생각을 만족시킬 수 있도록 외부 LED 를 통한 customized display, secret lighting, 자신의 사진을 활용하여 직접 꾸밀 수 있는 대기 화면 wallpaper 등 Fun 적 요소를 강화한 UI design 을 제안한다. 둘째, Practical UI 의 경우 IT 기기 및 mobile 활용도가 높은 target 층의 특성을 고려하여 강화된 사전기능, 학생시간표 등 사용의 편리함을 추구할 수 있는 기능을 포함한 UI design 을 제안한다. 이러한 일련의 사례연구는 1723 세대인 Young Customer 가 선호하는 New Concept 의 User Interface design 을 가능하게 한다. 뿐만 아니라, 이러한 일련의 연구 과정은 특정 계층을 위한 Mobile UI 를 설계 함으로써 차별화 UI 를 통한 시장 경쟁력을 갖춘 휴대폰의 개발을 가능하게 한다.
이혜미(Hyemi Lee),신권용(Kwon Yong Shin),강경태(Kyungtae Kang),강희석(Heuiseok Kang),황준영(Jun-young Hwang),박문수(Moonsoo Park),이상호(Sang-Ho Lee) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.11
Polymer thick film capacitors were successfully fabricated by using ink-jet printing and screen printing technology. First, a bottom electrode was patterned by ink-jet printing of a nano-sized silver ink. Next, a dielectric layer was formed by the screen printing, then a top electrode was pattern by ink-jet printing of a nano-sized silver ink. The printed area of the dielectric layers were changed into 2×2㎡ and 4×2㎡, and also the area of the electrodes were patterned with 1×3㎟ and 1×3㎟. The thickness of the printed dielectric layer was ranged from 1.1 to 1.4㎛. The analysis of capacitances verified that the capacitances was proportional to the area of the printed electrode. The capacitances of the fabricated capacitors resulted in one third of the calculated capacitances.
Super-resolution visible photoactivated atomic force microscopy
Lee, Seunghyun,Kwon, Owoong,Jeon, Mansik,Song, Jaejung,Shin, Seungjun,Kim, HyeMi,Jo, Minguk,Rim, Taiuk,Doh, Junsang,Kim, Sungjee,Son, Junwoo,Kim, Yunseok,Kim, Chulhong Nature Publishing Group 2017 Light, science & applications Vol.6 No.11
<P>Imaging the intrinsic optical absorption properties of nanomaterials with optical microscopy (OM) is hindered by the optical diffraction limit and intrinsically poor sensitivity. Thus, expensive and destructive electron microscopy (EM) has been commonly used to examine the morphologies of nanostructures. Further, while nanoscale fluorescence OM has become crucial for investigating the morphologies and functions of intracellular specimens, this modality is not suitable for imaging optical absorption and requires the use of possibly undesirable exogenous fluorescent molecules for biological samples. Here we demonstrate super-resolution visible photoactivated atomic force microscopy (pAFM), which can sense intrinsic optical absorption with ~8 nm resolution. Thus, the resolution can be improved down to ~8 nm. This system can detect not only the first harmonic response, but also the higher harmonic response using the nonlinear effect. The thermoelastic effects induced by pulsed laser irradiation allow us to obtain visible pAFM images of single gold nanospheres, various nanowires, and biological cells, all with nanoscale resolution. Unlike expensive EM, the visible pAFM system can be simply implemented by adding an optical excitation sub-system to a commercial atomic force microscope.</P>
Synthesis and Structure of Benzotriazolyl Fluorenes
Kwanghee Koh Park,Hyemi Jung,Taewoo Lee,Sung Kwon Kang 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.4
1-(Fluoren-2-yl)-benzo[d][1,2,3]triazoles 5a-b were synthesized starting from 2-nitrofluorene. 2-Nitrofluorenes 1a-b were reduced by catalytic hydrogenation, reacted with 2,4-dinitrofluorobenzene followed by catalytic hydrogenation to afford 2-(N-2,4-diaminophenyl)aminofluorenes 4a-b. Diazotization of 4a-b with NaNO2/H2SO4followed by treatment with H3PO2 gave 5a-b. Sulfonation of 5a-b yielded 7-benzotriazol-1-yl-fluorene-2-sulfonic acids 6a-b. The structures of 5b and 6b were firmly identified by X-ray crystal analysis in addition to 1H NMR, 13C NMR, and elemental analysis.