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고태식,신종기,윤명수,이정섭 대한척추외과학회 2018 Asian Spine Journal Vol.12 No.1
Study Design: A prospective study. Purpose: To identify associations between psychiatric factors and patient-reported outcomes after corrective surgery in patients with lumbar degenerative kyphosis (LDK). Overview of Literature: Thus far, to the best of our knowledge, patient factors that may help predict patient-reported outcomes after corrective surgery for LDK have not been studied. Methods: We prospectively investigated 46 patients with LDK who underwent surgical correction with a minimum follow-up of 2 years. Demographic data were collected. Short form-36, mental component scores (MCS), physical component scores (PCS), Scoliosis Research Society-22 (SRS-22) scores, and Roland–Morris Disability Questionnaire (RMDQ) scores were determined before the surgery and after 2 years of follow-up. Psychiatric conditions were preoperatively evaluated using the Zung depression scale (ZDS) and Zung anxiety scale (ZAS). Patients were divided into two groups (with or without psychiatric issues), according to baseline ZDS and ZAS scores. Results: Patients included 43 women and 3 men. Twelve patients were deemed to have psychiatric problems (P group) and 34 patients had no psychiatric problems (NP group). No significant intergroup differences were found in MCS, PCS, SRS-22, and RMDQ scores preoperatively. However, at the 2-year follow-up, a significant intergroup difference was observed between PCS and RMDQ scores. Multiple regression analysis revealed that only the presence of a preoperative psychiatric problem can predict PCS and RMDQ scores. Other factors, such as, gender, age, body mass index, bone mineral density, osteotomy site, number of fusion segments, and instrumented levels did not affect PCS or RMDQ scores. Conclusions: The presence of a psychiatric factor may be an important risk factor underlying poor physical and pain scores after corrective surgery in patients with LDK. The findings presented here suggest that psychiatric factors should be evaluated prior to surgery for determining the risk of a poor outcome.
한국의 對테러정책에 관한 연구: 집행구조의 다조직적 관계 분석을 중심으로
고태식,김문성 한국테러학회 2018 한국테러학회보 Vol.11 No.4
The counter-terrorism law was enacted on March 2, 2016 and two and a half years have passed. With the enactment of the law, the legal and enforcement system to prevent and respond against terrorism have been organized. which raised public attention on executing counter-terrorism policies and diffuse awareness on terrorism. Since then, the government's policy efforts have created an opportunity to increase effectiveness of the policies, centered on prime minister's counter-terrorism center. We analyzed Korea's counter-terrorism policy based on the executive structure theory. Which analyzes various forms of participants who are performing their duties in each organization by analyzing relationship between organizations participating in the execution process. Problems and causes identified in the relationship between organizations participating in the dynamical execution process of counter terrorism polices are analyzed from execution structure theoretical point of view. To enhance effectiveness of counter-terrorism policies multi-organizational relationship of executive process were given focus, range was set to formal/institutional relationship and informal/voluntary relationship, prior studies on terrorism management was reviewed and were classified according to respective approaches and perspectives. Provide policy alternatives for each stage to enhance effectiveness of counter-terrorism policies based on problems identified between central and local governments along with the private sector in enforcement of anti-terrorism policies. It is intended to contribute to implementation of stronger counter-terrorism policies to effectively prevent and respond to terrorism and ensure safety of the public by suggesting policy implications through research analysis of legal and enforcement system of Korea’s counter-terrorism policy and multi-organizational executive structure. 테러방지법이 2016년 3월 2일 제정되어 시행 된지 3여년의 시간이 지났다. 법 제정으로 테러 예방과 대응을 위한 법률체계와 추진체계가 정비되어 대테러정책을 집행함에 있어 국민적 관심과 함께 테러에 대한 인식이 확산되었고, 이후 정부의 정책적인 노력으로 정부의 정책 의도나 정책으로 결정된 사항은 국무총리실 산하 대테러센터를 중심으로 정책효과성을 높일 수 있는 체계가 마련되었다. 대테러정책의 집행과정에 동참하고 있는 조직들간의 관계를 분석하여 각각의 조직에서 임무를 수행하고 있는 참여자들의 형태를 파악하고, 집행구조 이론을 바탕으로 우리나라의 대테러정책을 분석하였다. 대테러정책의 동태적인 집행과정에 동참하고 있는 조직들간의 관계에서 식별된 문제점과 원인을 집행구조 이론적 관점과 대테러정책의 효과성을 높이기 위한 집행구조의 다조직적 관계에 초점을 두었으며, 공식적 · 제도적 관계 및 비공식적 · 자발적인 관계로 범위를 한정하였으며, 테러관리와 관련된 선행연구들을 검토하고, 각각의 접근법과 관점에 따라 분류하였다. 대테러정책을 집행함에 있어 활동의 주체인 중앙 및 지방정부 그리고 민간부문과 정책 집행 간 식별되어진 정책적 문제점을 토대로 하여 대테러정책의 효과성을 높이기 위하여 우리나라 대테러정책의 법률체계와 추진체계, 단계별 정책적 대안 제시와 함께 다조직적 집행구조에 대한 연구 분석을 통해 정책적 함의를 제시하여, 보다 강력하게 대테러정책을 집행함으로써 테러로부터의 안전보장과 테러범죄를 효과적으로 예방하고 대응하는데 기여하고자 한다.
소형 고체 로켓 추진제의 그레인의 형상 변화에 따른 추력 특성 연구
고태식(Go Tae-Sig),심진호(Jin-Ho Sim),용승주(Seung-Juu Yong),이병길(Byung-Gil Lee) 한국추진공학회 2008 한국추진공학회 학술대회논문집 Vol.2008 No.5
본 연구는 고체 추진제 그레인의 형상 변화에 따른 연소 특성을 고찰 하였다. LRE(액체로켓엔진)는 추진제의 공급량을 조절하여 추력을 변화시킬 수 있지만, SRM(고체로켓모터) 연소기 형상은 단순하지만 연소가 시작되면 추력 제어가 어렵다. 이러한 SRM(고체로켓모터)의 추력 제어의 어려움을 그레인의 크기나 형상의 변화를 통해 부분적으로 해결 할 수 있다. 소형 로켓의 추진제에 적합한 그레인을 설계하고 실험을 통해 검증하였습니다. This work is to observe combustion characteristics depending on variation of the solid propellent grain configuration. The LRE (Liquid Rocket Engine) enables adjusting the thrust by controling the required fuel mass glow, but the SRM(Solid Rocket Motor)is not easy to adjust th thrust due to the difficulty of th fuel flow control by its combustion behavior even its configuration is simple. This difficulty can be partly solved by changing th size or the configuration of the propellant grain. In this study a proper grain configuration of a small solid rocket is selected through both the theoretical design and the experimental tests.