• Journal of Chest Surgery
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• 제33권6호
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• pp.502-506
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• 2000

Background: Anticoagulant therapy can be required during pregnancy with prosthetic heart valves. Warfarin and heparin provide real protection against thromboembolic phenomena, but they also carry serious risks for the fetus and the mother. In an attempt to identify the best treatment for pregnant women with cardiac valve prostheses who are receiving anticoagulant, we studied 19 pregnancies, the warfarin was discontinued and heparin was administered every 12 hours by subcutaneous injection in doses adjusted to keep the midinterval aPTT in the therapeutic range(at least 2-2.5 control) from the conception to the 12th week of gestation and oral antiocagulant was then administered until the middle of the third trimester in the therapeutic range(at least 2 INR), and heparin therapy was restared until delivery. Also in order to avoid an anticoagulant effect during delivery, it has been our practice to instruct women to either discontinue their heparin injections with the onset of labur or to stop heparin injections 12 hours prior to the elective induction of labour. Result: The outcome of 19 pregnancies managed with above protocol was spontaneous abortion in 3 cases, voluntary termination in 2 cases, premature delivery at 35 weeks in 1 case and delivery at full-term in 14 cases. There was no maternal morbidity and moratality and fetopathy. Conclusion: We conclude that in the second and third trimester of pregnancy, warfarin provide effective protection against thromboembolism, Oral antiocagulant therapy should be avoided in 2 weeks before delivery because of the risk of serious perinatal bleeding caused by the trauma of delivery to the anticoagulated fetus. However, the substitution of heparin at first trimester and 2 weeks before delivery reduce the incidence of complications.

• Journal of Radiation Protection and Research
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• 제43권3호
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• pp.107-113
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• 2018

Background: The purpose of our study was to compare the dosimetric advantages of Flattening filter free (FFF) beams for trigeminal neuralgia patients using 4 mm conical collimators over previously treated patients with 6 MV SRS beam. Materials and Methods: A retrospective study was conducted for 5 TN patients who had been previously treated at our institution using frame-based, LINAC-based stereotactic radiosurgery (SRS) on Novalis Tx using 6 MV SRS beam were replanned on 6X FFF beams on Edge Linear accelerator with same beam angles and dose constraints using 4 mm conical collimator. The total number of monitor units along with the beam on time was compared for both Edge and Novalis Tx by redelivering the plans in QA mode of LINAC to compare the delivery efficiency. Plan quality was evaluated by homogeneity index (HI) and Paddick gradient index (GI) for each plan. We also analyzed the doses to brainstem and organ at risks (OARs). Results and Discussion: A 28% beam-on time reduction was achieved using 6X FFF when compared with 6X SRS beam of Novalis Tx. A sharp dose fall off with gradient index value of $3.4{\pm}0.27$ for 4 mm Varian conical collimator while $4.17{\pm}0.20$ with BrainLab cone. Among the 5 patients treated with a 4 mm cone, average maximum brainstem dose was 10.24 Gy for Edge using 6X FFF and 14.28 Gy for Novalis Tx using 6X SRS beam. Conclusion: The use of FFF beams improves delivery efficiency and conical collimator reduces dose to OAR's for TN radiosurgery. Further investigation is warranted with larger sample patient data.

• 항공우주정책ㆍ법학회지
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• 제23권1호
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• pp.3-32
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• 2008

In proportion to recent developments in aviation technology and growth of the air transport market, the risk of damages to third parties caused by aircrafts and the likelihood of unlawful interference on an aircraft in flight has grown larger. The war risk insurance market was paralyzed by the 9/11 terror event. And if another event on the scale of 9/11 occurs, compensations for third party damages will be impossible. Recognizing the need to modernize the existing legal framework and the absence of a globally accepted authority that deals with third party liability and compensation for catastrophic damage caused by acts of unlawful interference, the ICAO and various countries have discussed a liability and compensation system that can protect both third party victims and the aviation industry for the 7 years. In conclusion, in order to provide adequate protection for victims and the appropriate protection for air transport systems including air carriers, work on modernizing the Rome Convention should be continued and the new Convention should be finalized in the near future. Korea has not ratified the relevant international treaties, i.e. Rome Convention 1933, 1952 and 1978, and has no local laws which regulate the damage caused by aircraft to third parties on land. Consequently, it has to depend on the domestic civil tort laws. Most of the advanced countries in aviation such as the United States, England, Germany, France and even China, have incorporated the International Conventions to their national air law and governed carriers third party liability within their jurisdiction. The Ministry of Justice organized the Special Enactment Committee for Air Transport chapter under Commercial Law. The Air Transport chapter, which currently includes third party liability, is in the process of instituting new legislation. In conclusion, to settle such problems through local law, it is necessary to enact as soon as possible domestic legislation on the civil liability of the air carrier which has been connected with third party liability and aviation insurance.

• Journal of Radiation Protection and Research
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• 제46권3호
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• pp.134-142
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• 2021

Background: From 2018 to 2020, the Expert Study on Public Understanding after the Fukushima Daiichi Nuclear Power Plant Accident (the Expert Study Group) identified and analyzed activities designed to promote public understanding of science and radiation since the Fukushima accident, and held discussions on how to achieve public understanding in the situation where public confidence has been lost, and how experts should prepare for dealing with the public. This panel session was held at the 53^rd meeting of the Japan Health Physics Society on June 30, 2020. Materials and Methods: First, three subgroup (SG) leaders reported their research methods and results. Then, two designated speakers, who participated as observers of the Expert Study Group, commented on the activities. Next, the five speakers held a panel discussion. Finally, the rapporteur summarized. Results and Discussion: SG leaders presented reports from researchers and practitioners in health physics and environmental risks who provided information after the Fukushima accident. During the discussion, experts in sociology and ethics discussed the issues, focusing on the overall goals of the three groups, local (personal) and mass communication, and ethical values. Many of the activities instituted by the experts after the accident were aimed at public understanding of science (that is, to provide knowledge to residents), but by taking into account interactions with residents and their ethical norms, the experts shifted to supporting the residents' decision-making through public engagement. The need to consider both content and channels is well known in the field of health communication, and overlaps with the above discussion. Conclusion: How to implement and promote the public engagement in society was discussed in both the floor and designated discussions. Cooperation between local communities and organizations that have already gained trust is also necessary in order to develop relationships with local residents in normal times, to establish an information transmission system, and to make it work effectively.

• International Journal of Computer Science & Network Security
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• 제21권6호
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• pp.312-318
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• 2021

Lack of knowledge and digital skills is a threat to the information security of the state and society, so the formation and development of organizational culture of information security is extremely important to manage this threat. The purpose of the article is to assess the state of information security of the state and society. The research methodology is based on a quantitative statistical analysis of the information security culture according to the EU-27 2019. The theoretical basis of the study is the theory of defense motivation (PMT), which involves predicting the individual negative consequences of certain events and the desire to minimize them, which determines the motive for protection. The results show the passive behavior of EU citizens in ensuring information security, which is confirmed by the low level of participation in trainings for the development of digital skills and mastery of basic or above basic overall digital skills 56% of the EU population with a deviation of 16%. High risks to information security in the context of damage to information assets, including software and databases, have been identified. Passive behavior of the population also involves the use of standard identification procedures when using the Internet (login, password, SMS). At the same time, 69% of EU citizens are aware of methods of tracking Internet activity and access control capabilities (denial of permission to use personal data, access to geographical location, profile or content on social networking sites or shared online storage, site security checks). Phishing and illegal acquisition of personal data are the biggest threats to EU citizens. It have been identified problems related to information security: restrictions on the purchase of products, Internet banking, provision of personal information, communication, etc. The practical value of this research is the possibility of applying the results in the development of programs of education, training and public awareness of security issues.

• Safety and Health at Work
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• 제11권4호
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• pp.500-508
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• 2020

Background: Research on the status of many chemicals used in the semiconductor industry is needed. The purpose of this study was to describe the overall status of chemical use in the semiconductor industry in Korea and to examine it from a health perspective. Methods: Data on the status of chemical use and safety data sheets at 11 of 12 major semiconductor workplaces in Korea were collected. The number of chemical products and chemical constituents, quantities of chemicals, and trade secret ingredients used, as well as the health hazards were examined. Results: On average, 210 chemical products and 135 chemical constituents were used at the surveyed workplaces. Among all chemical products, 33% (range: 16-56%) contained at least one trade secret ingredient. Most of the trade secret ingredients were used in the photolithography process. Several carcinogens, including sulfuric acid, chromic acid, ethylene oxide, crystalline silica, potassium dichromate, and formaldehyde were also used. Only 29% (39 of 135) of the chemical constituents had occupational exposure limits, and more than 60% had no National Fire Protection Association health, safety, and reactivity ratings. Based on the aforementioned results, this study revealed the following. First, many chemical products and constituents are being used in the semiconductor industry and many products contained trade secret ingredients. Second, many products contained significant amounts of carcinogenic, mutagenic, and reproductive toxicant materials. Conclusion: We conclude that protecting workers in the semiconductor industry against harm from chemical substances will be difficult, due to widespread use of trade secret ingredients and a lack of hazard information. The findings of the status of chemical use and the health and safety risks in semiconductor industry will contribute to epidemiological studies, safe workplace, and worker health protection.

• 한국컴퓨터정보학회논문지
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• 제27권12호
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• pp.293-301
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• 2022

본 연구는 소비자 행동 연구 프레임워크인 VAM 모델을 기반으로 환경 인식이라는 이타적 변수를 결합하여 지각된 가치, 지각된 위험 및 환경 보호 의식이 구매 의도에 영향을 미치는 연구 모델을 구축하여 지각된 가치 및 지각된 위험의 요인을 깊이 분석한다. 612개의 유효한 설문지를 수집하고 실증 분석을 수행한 결과는 지각된 유용성, 지각된 오락성, 기술성 및 환경 보호 의식이 모두 신에너지 차량 구매 의도에 뚜렷한 긍정적인 영향을 미치고 지각된 요금은 구매 의도에 부정적인 영향을 미치는 것으로 나타났다. 본 연구의 결과를 통해 기업의 마케팅 개선 전략을 제공하고 소비자 지각된 위험을 줄이며 기업이 신에너지 차량의 환경 보호 속성을 홍보하고 기업 자체의 환경 보호 노력을 촉진하는 데 유익한 보완을 제공하고 경제적 이익과 환경적 이익의 균형을 촉진할 수 있다.

• Design & Manufacturing
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• 제16권4호
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• pp.52-59
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• 2022

Currently, Korea is an aging society and is expected to become a super-aged society in about four years. X-ray devices are widely used for early diagnosis in hospitals, and many X-ray technologies are being developed. The development of X-ray device technology is important, but it is also important to increase the reliability of the device through accurate data management. Sensor nodes such as temperature, voltage, and current of the diagnosis device may malfunction or transmit inaccurate data due to various causes such as failure or power outage. Therefore, in this study, the temperature, tube voltage, and tube current data related to each sensor and detection circuit of the diagnostic X-ray imaging device were measured and analyzed. Based on QC data, device failure prediction and diagnosis algorithms were designed and performed. The fault diagnosis algorithm can configure a simulator capable of setting user parameter values, displaying sensor output graphs, and displaying signs of sensor abnormalities, and can check the detection results when each sensor is operating normally and when the sensor is abnormal. It is judged that efficient device management and diagnosis is possible because it monitors abnormal data values (temperature, voltage, current) in real time and automatically diagnoses failures by feeding back the abnormal values detected at each stage. Although this algorithm cannot predict all failures related to temperature, voltage, and current of diagnostic X-ray imaging devices, it can detect temperature rise, bouncing values, device physical limits, input/output values, and radiation-related anomalies. exposure. If a value exceeding the maximum variation value of each data occurs, it is judged that it will be possible to check and respond in preparation for device failure. If a device's sensor fails, unexpected accidents may occur, increasing costs and risks, and regular maintenance cannot cope with all errors or failures. Therefore, since real-time maintenance through continuous data monitoring is possible, reliability improvement, maintenance cost reduction, and efficient management of equipment are expected to be possible.

• 한국콘텐츠학회논문지
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• 제15권11호
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• pp.410-421
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• 2015

본 연구의 목적은 상가권리금 법제화(2015.5.12.)의 내용을 구체적으로 검토하고, 임차인이 권리금을 회수하는 과정에서 실질적인 보호가 이루질 수 있도록 효과적인 개선방안을 강구하는 데 있다. 이러한 관점에서 본 연구는 다음과 같은 몇 가지 입법론을 제시하고자 한다. 우선, 개정된 상가건물임대차보호법상 서로 상충되는 '권리금' 및 '권리금 계약'의 정의규정은 혼란을 야기할 수 있을 뿐만 아니라, 임차인의 권리금회수보호라는 측면에서도 문제가 있으므로 양자를 일치시켜야 한다. 다음으로, 일정한 요건을 갖춘 경우 권리금 자체의 대항력을 인정하여 임차인의 권리금 회수보호를 강화할 필요가 있다. 또한, 임대인의 임차인 권리금 회수 방해행위와 관련된 모호한 규정들을 명확하게 정비하여야 하며, 권리금 회수방해로 인한 손해배상에 대한 입증책임이 누구에게 있는지를 명확히 정하여야 한다. 마지막으로, 국토교통부 장관으로 하여금 지역별 상권별 업종별 표준권리금 수준을 조사하여 고시하도록 의무화하여야 한다.

• 국제지역연구
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• 제21권4호
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• pp.247-268
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• 2017

본 연구는 2011년부터 2014년까지 감사대상기업의 사회적 책임이 감사 효율성에 미치는 영향을 분석하였다. 감사대상기업의 사회적 책임활동을 측정하는 변수로 경제정의연구소에서 공시하는 KEJI 지수 및 KEJI지수의 개별 항목 각각이 감사보수 및 감사시간에 미치는 영향을 분석하였다. 본 연구의 분석결과는 다음과 같다. 첫째, KEJI지수로 측정한 기업의 CSR활동은 감사보수 및 감사시간과 유의한 관련성이 나타나지 않았다. 한편, KEJI 지수를 구성하는 개별항목을 구분하여 CSR 개별 항목이 감사의 효율성에 미치는 영향에서는 CSR 공정성, CSR 사회공헌도, CSR 환경경영이 감사시간과 감사보수에 유의한 음(-)의 영향, CSR 소비자보호도와 CSR 직원만족도가 감사시간과 감사보수에 유의한 양(+)의 영향을 미치는 것으로 나타났다. 이러한 결과는 첫째, CSR 공정성, CSR 사회공헌도와 CSR 환경경영도 항목의 평점이 높은 기업의 재무제표 감사인은 재무제표 투명성의 제고로 인하여 감사위험을 낮게 평가할 수 있으며, 이러한 감사인의 평가는 감사시간의 투입을 낮추는 요인이 될 수 있음을 시사한다. 한편, 기업이 제공하고 있는 소비자 편의, 광고비 지출 및 직원들에 대한 보건, 안전, 교육훈련 등의 지출이 재무제표 왜곡가능성을 높일 수 있는 요인으로 인식할 수 있다. 재무제표 감사인은 CSR 소비자보호와 CSR 직원만족 활동이 높은 기업의 비용지출은 필수적이라기보다는 재량적이라고 판단할 수 있다. 이에 따라 감사인은 재무제표 왜곡위험이 높아짐에 따라 감사위험을 낮추기 위하여 더 많은 감사시간을 투입하고 있음을 시사한다. 또한, 본 연구결과는 KEJI 지수와는 별개로 KEJI 지수를 구성하는 개별항목이 재무제표감사의 효율성에 미치는 영향이 기업의 산업별, 규제별, 재무적특성별로 차별적으로 영향을 미칠 수 있음을 시사한다.