• 시큐리티연구
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• 제17호
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• pp.301-316
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• 2008

우리들 대부분은 어렸을 적 없었던 동화 가운데 “아기돼지 삼형제”이야기를 기억하고 있을 것이다. 늑대의 공격으로부터 아기돼지 삼형제를 구한 것은 막내 돼지의 벽돌집이었다는 것을 알 수 있다. 이 이야기가 경호 경비 관련자에게 시사하는 바는 "잘 설계된 물리적 환경이 범죄의 예방에 얼마나 중요한가"라는 것이다. 범죄 방지를 위한 지역 경찰의 능력은 치안수요에 비해 턱없이 부족하여 국민이 범죄에 대한 두려움을 해소시키지 못하였으며, 급기야는 공권력의 불신으로 이어져 심각한 사회위기 요인으로 작용하게 되었다. 사회에서 보는 것처럼 범죄대응체계와 방범체계를 비웃기라도 하듯이 순식간에 범행을 마치고 경찰이 출동하여 현장에 도착하기 전에 도주하는 경향이 보여 정부의 치안력 한계를 느끼게 하는 한다. 환경설계를 통한 범죄예방(CPTED: Crime Prevention Through Environmental Design)기법의 도입을 통해 범죄예방의 효율성의 기하는 한편 체계적인 범죄예방 프로그램과 가장 적합한 모델을 선정하여 활용하는데 과제를 안고 있으며, 지역 사회 범죄활동에 대해 경호활동의 중요성을 인식하고, 다양한 지역사회의 치안활동을 분석하여 이에 대한 전략으로 경호활동의 참여를 통한 접근에 초점을 맞추며, 현재까지 빈번하게 발생하고 있는 크고 작은 지역사회 범죄예방책으로 CPTED기법을 경찰과 민간경호경비업체에 적용하여 유효적절한 모델을 설정하고 지능화되고 흉포화 하는 범죄에 대응하고 예방하는 지표를 삼고자 하는 데에 이 연구의 궁극적인 목적이 있다.

• Asian Pacific Journal of Cancer Prevention
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• 제17권4호
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• pp.2049-2053
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• 2016

Background: The LigaSure vessel sealing system has been proposed to save operation time and reduce intraoperative blood loss for various surgeries. However, its usage for gastric cancer is still controversial. The aim of the present meta-analysis was to compare the effectiveness of LigaSure with conventional surgery in gastrectomy. Materials and Methods: Sources were retrieved from the Cochrane Library, MEDLINE, EMBASE, SCOPUS and Google Scholar until February, 2015. All randomized controlled trials comparing LigaSure with conventional surgery in curative gastric cancer resection were selected. After data extraction, statistics were performed by Review Manager 5.1 software. Results: Three eligible randomized controlled trials were evaluated, with a total of 335 patients. The quality of the included trials was good, yet some methodological and clinical heterogeneity existed. There were no significant differences between the LigaSure and conventional groups in operative time (weighted mean difference [WMD], -22.95 minutes; 95% confidence interval [CI], [-59.75, 13.85]; P = 0.22), blood loss (WMD, -45.8 ml; 95% CI, [-134.5, 42.90]; P = 0.31), nor the incidence of surgical complications (odds ratio, 1.18; 95% CI, [0.68, 2.05]; P = 0.54). But there was a longer duration of hospital stay in LigaSure group (WMD, 1.41 days; 95% CI, [0.14, 2.68]; P = 0.03). Conclusions: All available randomized evidence has been summarized. LigaSure does not confer significant advantage over conventional surgery for curative gastric cancer resection. The usefulness of the device may be limited in gastrectomy. But, more trials are needed for further assessment of the LigaSure system for gastric cancer.

• 한국화재소방학회논문지
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• 제32권1호
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• pp.24-32
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• 2018

수리계산방식에 의한 설계는 전산프로그램을 사용하는 방식과 직접 설계자가 계산에 의하여 설계하는 방식이 있다. 전산프로그램을 사용하는 경우 필요한 조건을 입력하면 프로그램에 의해 마찰손실, 유량, 양정 등을 계산하여 주지만 기본적인 개념과 절차를 모르게 되면 계산값이 입력자마다 다를 수가 있어 절차상의 기준을 정하는 것이 필요하다. 설계자가 직접 계산하는 경우에도 동일하다. 따라서 설계면적 내에서 수리계산의 절차를 다음과 같이 제시하였다. 가지관에 설치되는 티의 등가길이는 방출구(Outlet)의 관경이 다를지라도 설치된 배관의 관경과 동일한 관경(Run)의 등가길이를 선택한다. 가지관 중간에 손실값이 큰 다른 헤드가 있더라도 말단에서부터 계산해온 압력이 더 크다면 말단헤드에서부터 계산해온 압력으로 헤드방출량을 계산한다.

• 한국유체기계학회 논문집
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• 제11권1호
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• pp.33-39
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• 2008

Hybrid power generation systems combining a solid oxide fuel cell and a gas turbine is promising due to their high efficiency. In the pressurized hybrid system, the operating condition of the gas turbine may play a critical role in designing the hybrid system. In particular, prevention of surge of the compressor can be a critical issue. The existence of fuel cell between the compressor and the turbine may cause an additional pressure loss and thus compressor operating points tend to approach the surge if the original turbine inlet temperature is pursued. In this study, bypassing some of the turbine inlet gas directly to the turbine exit side is simulated. Its effects on suppressing the surge problem and change in performance characteristics are discussed.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2008년도 정기총회 및 학술발표대회
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• pp.605-608
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• 2008

Storm and flood damage management systems in national disaster management system(NDMS) were organized into three operation systems. They are prevention, preparation, response, and recovery systems. Disaster resources in each system must be promptly and exactly applied to minimize casualties and loss of properties. However, the disaster resources in current management system can not be immediately used in calamity situation due to the lack of efficiency in statistical data. Therefore, it is necessary to classify the emergency restoration equipment for efficient management and mobilization of disaster resources in disaster situation. In this study, field survey was executed to appropriately classify the emergency restoration equipment. Problems and reformation points of the disaster resources system were also presented to improve the classification technique and to construct the data base.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2007년도 춘계학술대회B
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• pp.3458-3463
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• 2007

Leakage would happen because of the damage of high temperature and high-pressure valve in nuclear power plant. condition based prevention maintenance is essential by using the suitable method based on local condition. Energy loss prevention can prevent from an accurate test, Local actually and ability. The methods of test for high energy fluid leakage at present are analysis of ${\Delta}$T, AE(Acoustic Emission) analysis, and thermal image. The result for test of AC (Main steam) system in YNG 2 Unit reveals that the AE occurred clearly in leakage situation, but thermal image didn't occur. It is identified that leakage is occurred when the orifice located front and back of valve operates. It shows that making a impatient judgment by using the single method if it is leakage is containing uncertainty. So I think that using the Multi-Measuring method is more sound judgment than Single-Measuring method.

• 셀메드
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• 제7권2호
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• pp.9.1-9.6
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• 2017

Recurrent Acute Pancreatitis/ Chronic Pancreatitis (RAP/ CP) is generally marked by sudden onset of symptoms like severe abdominal pain, vomiting and weight loss that needs emergency hospitalization. Owing to irreversible and progressive nature of the disease and limitations of conventional treatment, many patients look for an alternative solution. Here, we report data of 250 well diagnosed cases of acute recurring/ chronic pancreatitis, enrolled in between January 1997 to August 2016, in our Ayurvedic clinical practice in Northern part of India. Ayurveda is well recognized as an independent medical system parallel to conventional medicines in India and a subject is free to opt for any system of medicine for the prevention and treatment of any ailment. The subjects were treated with a complex herbo-mineral formulation based on the principles of Rasa Shastra in Ayurveda that deals with the therapeutics of processed metals in the prevention and treatment of diseases. They were also prescribed a regulated balanced diet and lifestyle. Significant improvement has been noted in subjects who have completed the treatment.

• 실천공학교육논문지
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• 제6권1호
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• pp.15-21
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• 2014

최근 무선인터넷 기술이 급속히 발전하고 있으며 특히 스마트폰의 서비스 활성화를 기반으로 모바일 어플리케이션에 대한 활용도가 높아지고 있다. 따라서 소프트웨어 개발자들이나 IT 관련학과 학생들은 일상생활에 편리한 각종 어플리케이션들을 개발하고 있다. 본 논문에서는 남서울대학교 컴퓨터학과 캡스톤 디자인 교과목에서 모바일 프로그램 개발 능력을 키우고 특히 안드로이드 운영체제기반으로 하는 각종 툴의 학습을 위해서 개발한 소지품 분실예방 어플리케이션을 제안한다. 이것은 스마트폰을 소지한 사용자가 알람을 통하여 자신의 소지품을 관리할 수 있고 분실하지 않도록 하는 어플리케이션이다. 또한 개발하는 과정을 통해 얻게 된 실무적 교육 효과에 대해 고찰하고자 한다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2002년도 추계학술대회 논문집(I)
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• pp.471-477
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• 2002

In this paper, it is proposed instruction code satisfied algorithm that is able to prevent data collision when transponder access in the area of recognition system that is operated to single channel. Differ from absolute collision is used to in the time domain procedure, instruction code satisfied algorithm, transmits data which don't generate collision and must satisfy instruction code. So, to prevent data collision, transponder is of great if it read the entire instruction code. Consequently, it is applied to algorithm that made the system of wireless recognition13.56 Mhz. As a result, for the time of one bit data transmission had 14${\mu}$s difference, it is proved the prevention of data loss in experiment.

• International Journal of Railway
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• 제3권3호
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• pp.106-112
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• 2010

Accidents at level crossing have large portion on train accidents, and causes economical loss by train delay and operational interruption. Various safety equipments are employed to reduce the accident at level crossing, but existing warning device, and crossing barrier are simple train-oriented protection equipments. In this paper, intelligent railway level crossing system is proposed to prevent and reduce accidents. For train driver's prompt action, image of level crossing and obstacle warning message are continuously provided to train driver through wireless communication in level crossing control zone. Obstacle warning messages, which are extracted by computer vision processing of captured image at level crossing, are recognized by train driver through message color, flickering and warning sound. It helps train driver to decide how to take an action. Meanwhile, for vehicle driver's attention, location and speed of approaching train are given to roadside equipments. We identified the effect of proposed system through test installation at Sea train and Airport level crossing of Yeong-dong line.