Comparison of perioperative and short-term outcomes between robotic and conventional laparoscopic surgery for colonic cancer

Sungwon Lim,Jin Hee Kim,Se-Jin Baek,Seon-Hahn Kim,Seon Heui Lee 대한외과학회 2016 Annals of Surgical Treatment and Research(ASRT) Vol.90 No.6

Purpose: Reports from several case series have described the feasibility and safety of robotic surgery (RS) for colonic cancer. Experience is still limited in robotic colonic surgery, and a few meta-analysis has been conducted to integrate the results for colon cancer specifically. We conducted a systematic review of the available evidence comparing the surgical safety and efficacy of RS with that of conventional laparoscopic surgery (CLS) for colonic cancer. Methods: We searched English databases (MEDLINE, Embase, and Cochrane Library), and Korean databases (KoreaMed, KMbase, KISS, RISS, and KisTi). Dichotomous variables were pooled using the risk ratio, and continuous variables were pooled using the mean difference (MD). Results: The present study found that the RS group had a shorter time to resumption of a regular diet (MD, –0.62 days; 95% CI, –0.97 to –0.28), first passage of flatus (MD, –0.44 days; 95% CI, –0.66 to –0.23) and defecation (MD, –0.62 days; 95% CI, –0.77 to –0.47). Also, RS was associated with a shorter hospital stay (MD, –0.69 days; 95% CI, –1.12 to –0.26), a lower estimated blood loss (MD, –19.49 mL; 95% CI, –27.10 to –11.89) and a longer proximal margin (MD, 2.29 cm; 95% CI, 1.11-3.47). However, RS was associated with a longer surgery time (MD, 51.00 minutes; 95% CI, 39.38–62.62). Conclusion: We found that the potential benefits of perioperative and short-term outcomes for RS than for CLS. For a more accurate understanding of RS for colonic cancer patients, robust comparative studies and randomized clinical trials are required.

Effects of different diluents and cryoprotective agents on the sperm cryopreservation of ablalone (Haliotis discus hannai)

Kang, Sungwon,Lim, Jae Geun,Seon, Seung Cheon,Lee, Kyeong Sig,Kim, Jiheon,Jeong, Tae Hyug,Oh, Young Dae,Lim, Han Kyu The Malacological Society of Korea 2017 The Korean Journal of Malacology Vol.33 No.1

일개 의과대학 교육목표에 대한 인지도 조사

임현술,정철,이관,홍성원 東國大學校醫學硏究所 2004 東國醫學 Vol.11 No.1

목적: 교육목적과 교육목표는 대학의 교육이 지향하는 대전제이자 성취시켜야 할 대상이다. 특히 의학 교육에서 이들은 중요한 의미를 가지고 있다. 이 조사는 D 의과대학 교수들과 학생들을 대상으로 의과 대학 교육목적과 교육목표의 인지도를 조사하고 내용을 검토하여, 올바른 교육방향의 설정을 위한 기초 자료로 사용하고자 하였다. 대상 및 방법: D 의과대학의 교육목적과 교육목표에 대한 인지도를 조사하기 위해 2002년과 2003년 2회에 걸쳐 설문조사를 시행하였다. 또한 의과대학 인정평가의 평가항목을 기준으로 D 의과대학의 교육 목적과 교육목표를 검토하였다. 1차 조사는 2002년 5월 6일부터 5월 30일까지, 2차 조사는 2003년 4월 10일부터 4월 24일까지 실시하였고, 조사대상자는 2002년에 교수 21명, 학생 169명이었고, 2003년에는 교수 31명, 학생 230명이었다. 결과: 교육목표에 대한 인지도는 2002년 교수 95.2%, 학생 75.7%이었고, 2003년에는 교수 100.0%, 학생 56.5%이었다. 교육목표에 대한 동의는 2002년에 교수 100.0%, 학생 87.0%이었고, 2003년에는 교수 93.3%, 학생 90.9%이었다. 교수의 교육목표에 따른 교육의 시행은 2002년에 86.0%, 2003년에는 93.3%이었으며, 학생의 교육목표에 의한 교육 이수는 2002년에 41.4%, 2003년에는 48.3%이었다. 향후 학생이 교육목표을 실천하는 사회인으로 성장할 가능성은 2002년에 교수 71.4%, 학생 69.3%, 2003년에는 교수 74.0%, 학생 71.2%이라고 응답하였다. D 의과대학의 교육목적과 교육목표에 대해 검토한 결과 지역사회참여 능력 배양 및 기본적 진료능력의 배양에 대한 내용이 포괄적으로 기술되어 있었다. 결론: 교수들에서 교육목표에 대한 인지도, 동의 여부, 향후 교육목표를 실천하는 사회인으로 배출될 가능성은 전반적으로 높았으나, 학생들은 교육목표에 대한 인지도가 낮았고, 교육목표에 따른 교육을 이수하지 못하고 있다고 조사되었다. 결론적으로 의과대학의 구성원들에게 교육목적과 교육목표를 널리 홍보하고, 이에 준하여 교육을 수행하고 이수하도록 노력하여야 할 것이다. Objectives: The aim of our study was to examine the recognition of the D University's educational goals and objectives from professors and students at a medical school and to use this survey as a reference for developing new objectives. Methods: A questionnaire was conducted and the educational goals and objectives of the members of a medical school including professors and students were reviewed. The survey was performed twice: first from May 6 to 30 in 2002, and second from April 10 to 24 in 2003. At total 21 professors and 169 students were involved in the survey in 2002 and 31 professors and 230 students in 2003. Results: The proportion of those who recognized the educational objectives in 2002 were 95.2% and 75.7% of professors and students, respectively; while 100.0% and 56.5% of professors and students recognized the educational objectives in 2003. The proportion of those who agreed with the educational objectives in 2002 was 100.0% of professors and 87.0% of students, whereas in 2003, 93.3% and 90.9% of professors and students agreed, respectively. The proportion of those who taught according to the educational objectives was 86.0% in 2002 and 93.3% in 2003, while the proportion of students trained according to the educational objectives was 41.4% and 93.3% in 2002 and 2003, respectively. In 2002, the expected practice of the educational objectives after graduation were 71.4% of professors and 69.3% of students, while the expected practice was 74.0% of professors and 71.2% of students in 2003. Conclusions: The recognition, the agreement and the expected practice of the educational objectives appeared to be good in both professors and students, but the training of students according to the educational objectives was poor. Therefor, the educational objectives should be further encouraged.

NMR assignmnets of tetra-/penta-hydroxyflavanone derivatives

Sungwon Hong(홍성원),Joong-Hoon Ahn(안중훈),Yoongho Lim(임융호) 한국생물공학회 2005 한국생물공학회 학술대회 Vol.2005 No.10

Computation Offloading with Resource Allocation Based on DDPG in MEC

Sungwon Moon,Yujin Lim Korea Information Processing Society 2024 Journal of information processing systems Vol.20 No.2

Recently, multi-access edge computing (MEC) has emerged as a promising technology to alleviate the computing burden of vehicular terminals and efficiently facilitate vehicular applications. The vehicle can improve the quality of experience of applications by offloading their tasks to MEC servers. However, channel conditions are time-varying due to channel interference among vehicles, and path loss is time-varying due to the mobility of vehicles. The task arrival of vehicles is also stochastic. Therefore, it is difficult to determine an optimal offloading with resource allocation decision in the dynamic MEC system because offloading is affected by wireless data transmission. In this paper, we study computation offloading with resource allocation in the dynamic MEC system. The objective is to minimize power consumption and maximize throughput while meeting the delay constraints of tasks. Therefore, it allocates resources for local execution and transmission power for offloading. We define the problem as a Markov decision process, and propose an offloading method using deep reinforcement learning named deep deterministic policy gradient. Simulation shows that, compared with existing methods, the proposed method outperforms in terms of throughput and satisfaction of delay constraints.

Root of Platycodon grandiflorum as calcium ion channel blocker

Sungwon Hong(홍성원),Kyungrae Kang(강경래),Seungyeol Nah(나승열),Yoongho Lim(임융호) 한국생물공학회 2005 한국생물공학회 학술대회 Vol.2005 No.10

Detection of chlorobenzene in water using a wettability-controlled three-dimensional graphene selective filter

Lim, Taekyung,Lee, Jaejun,Kim, Jihyoung,Seo, Sungwon,Ju, Sanghyun Japan Society of Applied Physics 2017 Applied physics express Vol.10 No.1

Influence of the Sb content in Ti/SnO₂-Sb electrodes on the electrocatalytic behaviour for the degradation of organic matter

Lim, Dongwook,Kim, Yoonkyung,Nam, Daehyeon,Hwang, Sungwon,Shim, Sang Eun,Baeck, Sung-Hyeon Elsevier 2018 JOURNAL OF CLEANER PRODUCTION Vol.197 No.1

<P><B>Abstract</B></P> <P>In this paper, Ti/SnO<SUB>2</SUB>-Sb electrodes with different Sb dopant amounts were successfully fabricated on acid-treated Ti substrates by a thermal decomposition method; this was done in an attempt to examine the effect of the doping amount on the electrochemical activity and stability of the electrode. The physicochemical properties of the prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM)-energy-dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). The electrochemical properties were investigated by linear sweep voltammetry (LSV), and the stability was studied via accelerated lifetime testing. The electro-catalytic activity of the prepared Ti/SnO<SUB>2</SUB>-Sb electrodes was strongly dependent on the amount of the Sb dopant, leading to a change in the OER overpotential. Among the prepared samples, the Ti/SnO<SUB>2</SUB> electrode with 10% of a Sb dopant showed the highest catalytic activity for oxygen evolution reaction (OER), and 87% of COD removal with 20 mA cm<SUP>−2</SUP> of current density for 60 min was achieved in the presence of 10.0 g L<SUP>−1</SUP> of chloride. The findings reported herein suggest that the Ti/SnO<SUB>2</SUB> electrode with an optimized Sb dopant amount shows enhanced electro-catalytic performance by easily generating active hydroxyl radicals, which act as strong oxidizing agents.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ti/SnO<SUB>2</SUB>-Sb electrodes with different amounts of Sb doping were prepared by thermal decomposition. </LI> <LI> The prepared electrodes exhibited a cracked surface morphology and were not crystalline. </LI> <LI> The efficiency of COD elimination depended largely on the amount of Sb. </LI> </UL> </P>

Web-based Collaboration Systems for Structural Design: A Review

Lim, Jinkang,Lee, Jaewook,Lee, Seunghye,Kim, Han Soo,Jung, Sungwon Korean Institute of Building Information Modeling 2015 KIBIM Magazine Vol.5 No.4

In a construction project, collaboration amongst the project participants is a critical factor for high-quality results and successful completion of the project. Owing to the advance of information technologies, web-based systems have become more common in the construction industry, but research and development has been made for only limited areas. For organized and systematic collaboration in various fields, collaboration systems have to be developed in a holistic manner based on diverse needs from the whole construction industry. This study aims to investigate the current status of web-based collaboration systems from structural engineers' perspectives and propose an improvement plan. For a systematic analysis of selected cases, we apply a classification of three developmental stages depending on interoperability and organizational levels: structural design and analysis, collaborative design, and integrated design management. Thereafter, the characteristics of each stage are extracted and comparatively analyzed. Lastly, three functional factors were proposed for the improvement of web-based collaboration systems for structural design.

Development of Theory of Mind Stimuli in Magnetoencephalography for Nursing Evaluation

Sungwon Park,Sanghyun Lim,Kiwoong Kim 보안공학연구지원센터(IJSIP) 2009 International Journal of Signal Processing, Image Vol.2 No.3