선교 효과 극대화를 위한 선교사 배치 모형

조성철 ( Cho¸ Seong Cheol ) 한국복음주의선교신학회 2021 복음과 선교 Vol.55 No.-

로잔 운동의 전개는 선교의 개념을 전통적인 복음 전도에서 삶의 모든 영역을 포괄하는 총체적 선교로 확대하였고, 선교 현장에 서는 비즈니스 선교 활성화의 배경이 되었다. 경영 관리적 관점에서 이러한 변화는 선교 서비스의 공급과 수요 모든 면에서 다양한 변화가 일어나서 선교전략의 기본적인 의사결정인 선교사 배치의 복잡성을 증가시킨 것이다. 이러한 복잡성의 증가로 인해 전통적 인 개별 선교사나 개교회 중심의 선교관리보다는 다수의 선교사와 선교지를 통합적으로 관리하는 통합기구의 역할이 강조된다. 그러나 다변화하며 증가하는 다수의 선교사를 다수의 선교지에 최적으로 배치하는 안을 찾는 일은 체계적인 방법론의 도움 없이는 현실 적으로 불가능하다. 이러한 상황을 배경으로 이 논문에서는 선교사 배치 모형(MAP, Missionary Assignment Planning)이라는 의사 결정 모형을 개발하여 다수의 선교사를 다수의 선교지에 최적으로 배치하는 방법을 제안한다. 제안된 의사결정 모형은 현대 경영 과학의 최적화 개념을 활용하여 개발되었다. 개발된 모형의 활용을 보이기 위해 선교사 5명이 2개의 선교지에 배치되는 문제와 10 명의 선교사가 4개의 선교지에 배치되는 가상적인 상황을 실험하였다. 이 실험을 위해서는 오늘날 PC 사용자들이 쉽게 사용할 수 있는 마이크로소프트 엑셀의 ‘해 찾기(Solver)’를 사용하였다. 제안된 기본 모형에 선교사 배치를 위한 예외적인 정책이나 세부 상황을 쉽게 반영하는 모형의 변형 가능성도 예시하였다. 또한 제안된 의사결정 모형은 이 논문에서 다룬 선교사 배치를 포함하여 더 넓게 포괄적인 선교자원 배치를 위해서도 확대할 수 있다는 가능성을 부가하였다. The evolution of the Lausanne Movement has enlarged the concepts of Christian mission from traditional evangelism to all aspects of human life. This broadened view has triggered the so-called BAM (Business as Mission) movement, which also embraces the applications of the professional management attitude and knowledge to mission activities. Various new emerging challenges of Christian missions have constantly increased the strategic complexity of assigning missionaries to mission fields beyond the ability of conventional mission management approaches. As an attempt to overcome this increasing complexity, this study develops a decision-making model for assigning missionary applicants to mission fields to maximize mission performance. The management science model, developed and defined as MAP (Mission Assignment Planning) in this study, can efficiently compare all the possible assignments of the missionaries to their mission fields and provide an optimal assignment for maximizing the overall expected mission performance. The implementation of MAP will not require any professional understanding of the mathematical details involved in the model but simply a basic understanding of using the spreadsheet software familiar to PC users these days. This study has illustrated how MAP works in practice by testing two hypothetical examples of assigning 5 missionaries to 2 mission fields, and 10 to 4, respectively. The Microsoft Excel Solver was used to test the examples. A few easy modifications for MAP to reflect exceptional minor considerations are added. A possible extended application is also added for MAP to assign all the mission resources including the human resources, especially as new virtual mission resources are growing fast due to the recent rapid development of information and communication technology.

Simultaneous and multiplexed detection of exosomal nucleic acid biomarkers

Seongcheol CHO,Won Jong RHEE 한국생물공학회 2018 한국생물공학회 학술대회 Vol.2018 No.10

Bone Marrow Recurrence with Microscopic Pulmonary Tumor Embolism after Excision of Extramammary Paget’s Disease in Scrotum Three Years Ago

Seongcheol Cho,Jin Won Kim,Jeonghwan Youk,Sang Mee Hwang,Hyo Jin Park,Choon-Taek Lee 순천향대학교 순천향의학연구소 2015 Journal of Soonchunhyang Medical Science Vol.21 No.2

Here we report a case of a 72-year-old male patient recurred in bone marrow alone with pulmonary tumor embolism after an excision of extramammary Paget’s disease of scrotum 3 years ago. The patient received paclitaxel/carboplatin chemotherapy with respiratory support in intensive care unit. Four days after chemotherapy, the oxygen demand decreased and the patient was transferred to general ward. The platelet count recovered after 2 weeks. Finally, he died of hepatic failure from Paget’s disease hepatic involvement confirmed by liver biopsy at 10 months after recurrence. This is a rare case of recurred extramammary Paget’s disease in bone marrow alone with pulmonary tumor embolism, which was properly diagnosed with high suspicion and was successfully treated with immediate chemotherapy.

End-Point Positioning of One-Link Flexible Arm under Translational Motion

SeongCheol Lee,Seiji Chonan,Hikaru Inooka 제어로봇시스템학회 1990 제어로봇시스템학회 국내학술대회 논문집 Vol.1990 No.10

Power-to-gas systems with a focus on biological methanation

Seongcheol Kang,Anil Kuruvilla Mathew,Amith Abraham,Okkyoung Choi,Byoung-In Sang 한양대학교 청정에너지연구소 2022 Journal of Ceramic Processing Research Vol.23 No.6

Power to Gas (P2G) systems aim to store surplus renewable electricity generated in the form of gaseous fuels such as hydrogenor methane. The concept is ideal for storing the surplus energy for long periods in gaseous form and can be used in the futurefor desired end applications, i.e. either in gaseous form or electricity. In the P2G process, the surplus renewable energyconverts into methane (gaseous form) in a two-step process: electrolysis followed by methanation. The electrolysis process isused as the source for hydrogen generation, which further reduces carbon dioxide to produce methane. In this review, differentelectrolyzers and methanation processes are compared for the P2G process. The major process parameters and hydrogen gasliquid mass transfer are discussed by comparing different process conditions and reactor configurations used in biologicalmethanation. An understanding of the techno-economic analysis indicates that cost of the hydrogen generation is the key factorthat determines the overall economics of the P2G system. The cost of hydrogen generation is associated with the capital costof the electrolyzer and the cost of the electricity. It is expected that once this technology becomes mature, the economics of P2Gsystems will improve in the future.

A Study on the Effective Half-life after the High Dose Radioactive Iodine (131 I) Therapy for Thyroid Cancer Patients

Seongcheol Kim(김성철),DaYeong Gwon(권다영),Yongmin Kim(김용민) 한국방사선학회 2017 한국방사선학회 논문지 Vol.11 No.7

고용량 131 I 치료는 분화갑상선암으로 인한 갑상선전절제술을 받은 환자에게 보편적으로 시행되어 왔다. 고용량 131 I 치료를 하는 경우 환자로부터 일반인이 받게 되는 피폭선량을 선량한도 이내로 제한하기 위해 환자를 일정 기간 동안 격리하여야 한다. 유효반감기는 환자로부터 가족들이 얼마나 피폭되는지 계산하거나 격리기간을 결정하는데 중요한 값이다. 이에 본 연구에서는 NM670 SPECT/CT를 이용해 고용량 13 1I 치료환자의 유효붕괴상수, 유효반감기, 격리기간을 도출하였다. 본 연구를 통해 고용량 131 I 치료환자의 유효반감기를 도출하였고, 체내에 잔류 방사능량이 퇴원기준인 1.2 GBq 에 도달하는 시간을 확인하였다. 또한 치료선량별 유효반감기를 비교하였을 때 유의한 차이가 없었으나, 격리기간은 치료선량이 커질수록 격리기간이 길어지는 것을 확인할 수 있었다. 전처치 유형별 유효반감기를 비교하였을 때 rhTSH 환자군과 THW 환자군의 유효반감기가 유의한 차이를 보이지 않았으나, 격리기간은 rhTSH 환자군이 THW 환자군 보다 짧게 나타났다. 이는 치료선량의 차이로 인해 격리기간이 짧아진 것으로 판단된다. 따라서 현행 의료보험체계(rhTSH 사용 시 3.7 GBq 이하에서 보험적용)가 유지된다면, 전처치 유형별로 구분하여 현행 격리기간(2박 3일)보다 더 이른 시간에 환자를 퇴원시킬 수 있을 것이다. High-dose 131 I therapy has been generally carried out to remove remaining thyroid tissue or to cure metastasize lesion of patients who received full thyroidectomy due to differentiated thyroid cancers. In case high-dose 131 I therapy is carried out for a patient, the patient should be hospitalized being isolated for a certain period in order to restrict the amount of exposure to radiation of people at large from the patient within the limit of a level of radiation. Effective half-life is an important value to calculate how family members are exposed to radiation from a patient or to decide the period of isolation of the patient from the family members. Therefore, in this study we calculated the effective decay constant, effective half-life and period of isolation of high-dose 131 I therapy patient using NM670 SPECT/CT. As a result of carrying out this study, the effective half-life of high-dose 131 I therapy patients was derived and the time to reach the discharge level of 1.2 GBq was confirmed. When they were compared with each other in each of curative doses, the effective half-life did not have significant difference, but the time when the level of radiation remaining in the interior of the body to reach the criteria of isolation and discharge showed significant difference and it could be confirmed that the higher the curative dose the longer the period of isolation becomes. When the effective half-lives in each type of preparation were compared with each other, they did not show significant difference. However, When the times to reach the level of radiation that is the criteria of isolation and discharge in each type of preparations, they showed significant difference. The cause of the shortening of the isolation period for rhTSH patients group is decided to be low curative dose. Accordingly, if the current national health insurance (the insurance is applied to using of rhTSH in 3.7 GBq or lower) is maintained, while discerning them in each of types of preparation, we would be able to discharge patients at the time earlier than the current period of isolation (2 nights and 3 days).

How the Korean Online Gaming Industry Has Evolved: An Institutional Analysis

Seongcheol Kim,Jiwhan Kim 한국정보사회학회 2011 정보사회와 미디어 Vol.- No.20

Multi-agent Reinforcement Learning with Graph Neural Networks for OHT Traffic Control

Seongcheol Woo(우성철),Kyuree Ahn(안규리),Juneyoung Yeon(연준영) 한국경영과학회 2019 한국경영과학회 학술대회논문집 Vol.2019 No.4

Simultaneous and multiplexed detection of exosomal nucleic acid biomarkers

Seongcheol CHO,Ji Hye LEE,Jeong Ah KIM,Won Jong RHEE 한국생물공학회 2018 한국생물공학회 학술대회 Vol.2018 No.4

Microfluidic Microplastics Trap Module for Detection by Fluorescent Staining

Seongcheol SHIN,Hyun Ho LEE,Seungju OH,Hyeyeon HUR,Jongmin YANG,Dhanashiri DESAI,Gillhwan KIM,Chorong KIM 한국생물공학회 2021 한국생물공학회 학술대회 Vol.2021 No.10

Microplastics has a negative impact on marine ecosystems and humans. In this study, we developed microfluidic devices as microplastics trap modules using polydimethylsiloxane (PDMS) using photolithography or laser ablation. For a generation of turbulent flow to separate microplastics, several grooves were pattered inside the microfluidic channel. It proves that grooved channel is an efficient platform to trap the microplastics by recirculation. Finally, the microfluid trap module could be connected with PDMS mixer module to selectively stain the trapped microplastics my fluorescent dye.