• International Journal of Highway Engineering
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• v.9 no.1 s.31
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• pp.29-38
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• 2007

The Korea National Police Agency launched a campaign to encourage drivers in stop line observance and to discourage stop line violation by intensively imposing fines. It was to increase stop line observance of drivers and thus traffic safety. According to statistics, the stop line observance rate was increased over 80 % of drivers during the campaign but regressed to the past after the campaign. This paper delivers the effect of the location of traffic signal lights on driver's stop line observance and develops a guideline to improve highway traffic environment in long terms. Statistical tests conducted based on field data showed that the drivers' stop line observance increases when traffic signal lights are closely installed from a stop line. It was proposed from the study that traffic signal lights be installed $10{\sim}20m$ from a stop line.

• Journal of the Korea Society for Simulation
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• v.29 no.2
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• pp.1-10
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• 2020

Companies that use open source SW must comply with the "Open Source SW License" in order to use it freely. However, despite the potential legal responsibilities and risks associated with compliance, they do not know or neglect the risks. For this reason, cases of disputes, including license violations, are soaring. Recently, Open source SW license compliance platform services have been developed and actively utilized to address these issues. This study designed a business model for open source SW license compliance platform and conducted an economic feasibility analysis. The focus of the study is the establishment of a business model and the estimation of potential customers and actual purchase rates. For this purpose, we designed seven business model scenarios for promotion and sales period, and performed an economic evaluation using an expanded model of the Bass model, the Kalish model and the customer's maximum willingness to pay.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.22 no.6
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• pp.168-181
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• 2023

This study analyzed the effects of traffic enforcement on accident reduction. The results revealed a significant reduction in both overall accidents (28.53%) and fatal accidents (39.44%). Notably, enforcement equipment targeting speed limits of 30 km/h and 50 km/h demonstrated similar accident reduction rates of 42.23% and 25.85%, respectively. However, variations were observed based on accident types and types of traffic violations. Therefore, it is evident that enforcement equipment yields distinct accident reduction effects depending on speed limits and types of traffic accidents. This finding underscores the potential for making informed policy decisions to enhance traffic safety measures.

• The Transactions of the Korea Information Processing Society
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• v.4 no.12
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• pp.3150-3158
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• 1997

In the ATM networks, there are two method in traffic control as schemes to improve the quality of service; one is the reactive control after congestion and the other is the preventive control before congestion. The preventive control include the CAC(Connection Admission Control), the UPC(Usage Parameter Control), the NPC(Network Parameter Control) and the PC(Priority co ntrol). In this paper, we propose an efficient UPC algorithm that has a complex structure using the Jumping window algorithm within the Leaky Bucket algorithm. The proposed algorithm controls peak hit rate by the Leaky Bucket algorithm, then it does the traffic control to evaluate by the Jumping Window whether violates mean bit rate or not. As we assume On/Off traffic source model, our simulation results showed cell loss rate less than the pre-existential Leaky Bucket algorithm method, and it could decrease the demanded Bucket size.

• Proceedings of the KOR-KST Conference
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• 1996.02a
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• pp.87-114
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• 1996

심각한 노인교통사고를 줄이기 위하여 가장 높은 점유율을 보이는 노인보행자의 횡단사고 유형, 특성 및 사고원인을 분석했다. 횡단사고의 약 60%가 횡단보도 및 그 부근에서 발생했고, 70%이상이 노인여성이었으며, 절반정도가 야간에 발생했고 피해정도는 치사율이 12%, 부상은 평균 6주의 중상이었다. 사고원인은 특히 횡단보도 및 그 부근에서의 운전미확인이 가장 많았고, 노인보행자측의 원인은 고의위반 또는 법의 부지가 가장 많았다. 노인보행자의 횡단사고를 줄이기 위해서 운전자에게 횡단보도 정지선 엄수, 횡단보도 부근뿐 아니라 생활도로 및 상업지역 도로에서의 철저한 안전확인 등의 교육, 홍보, 훈련이 필요하다. 노인보행자를 위한 훈련프로그램은 성별로는 특히 노인여성에게 집중적 훈련이 요구되며, 훈련내용으로는 야간횡단의 위험성 인식 및 반사재 부착, 안전한 횡단장소 선택 및 횡단절차의 훈련, 상대방은 운전자와의 의사소통 훈련 등이 중점적으로 개발되어야 한다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2007.05a
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• pp.1033-1037
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• 2007

The final purpose of this study is to develop noise abatement procedures for minimizing the environmental impacts caused by aircraft noise in the vicinity of Gimpo Int'l Airport, and to establish appropriate noise limits and monitoring system. The results of study was suggests for more detail the crucial factors which one is reference noise level, $L_{MAX}=88dB(A)$ at 6.5km after take-off, and second one is to installation the additional three(3) noise monitoring system on both side of runway.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.17 no.9
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• pp.874-880
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• 2007

The final purpose of this study is to develop noise abatement procedures for minimizing the environmental impacts caused by aircraft noise in the vicinity of Gimpo Int'l Airport, and to establish appropriate noise limits and monitoring system. The results of study was suggests for more detail the crucial factors which one is reference noise level, $L_{MAX}=88 dB(A)$ at 6.5 km after take-off, and second one is to installation the additional three(3) noise monitoring system on both side of runway.

• Proceedings of the Safety Management and Science Conference
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• 2001.11a
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• pp.169-174
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• 2001

IMF이후 건설 물량은 감소하고 있는 경향이나 재해율은 그다지 감소하지 않고 있고 여전히 중대재해는 계속 발생하고 있는 추세이며, 건설업체에서는 안전관리에 대한비용을 더욱 아끼려 하고 있어 비용절감을 위해 재해예방을 위한 안전시설 비용이나 안전활동 비용을 투자하지 않고 있다. 따라서, 본 연구는 중·소규모 건설현장 안전점검의 실태를 조사 분석하여 문제점을 도출하고 효율적 운영방안을 제시하는 것으로 하였다 현행 안전점검의 실태조사를 위하여 안전점검의 관계담당자인 전국의 노동부 지방노동관서 근로감독관, 한국산업안전의 각 지역본부 및 지도원 기술직원, 안전점검대상 건설현장 관계자에게 각각 설문 조사지를 배부하여 실태를 조사하고 분석하였으며, 또한 노동부의 최근 년도인 1999년, 2000년도의 재해발생통계 및 안전점검실적 자료, 대한건설협회의 최근 년도별 건설공사 수주금액, 공사규모별 현황 및 외국의 건설현장 안전점검사례를 수집하고 분석하였다. 이러한 실태조사 등 수집된 자료분석 및 각종 참고문헌 연구를 통하여 안전점검의 대상현장을 선정하는 기준과 위반사항에 대한 행정 및 사법조치 기준에 대한 문제점을 제시하고 이러한 문제점에 대하여 효율적인 개선대책을 제시하였다.

• Journal of the Korea Society of Computer and Information
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• v.6 no.4
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• pp.188-205
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• 2001

Insurer's duty of declaration is based on reciprocity of principle of the highest good, and recently it is widely recognized in the British and American insurance circles. The conception of fiduciary relationship is no longer equity or the legal theory which is only confined to the nations with Anglo-American laws. Therefore, recognizing the fiduciary relationship as the essence of insurance contract, which is more closely related to public interest than any other fields. will serve an efficient measure to seek fair and reasonable relationship with contractor, and provide legal foundation which permits contractor to bring an action for damage against violation of insurer's duty of declaration. In the future, only when the fiduciary relationship is approved as the essence of insurance contract, the business performance and quality of insurance industry is expected to increase. Therefore, to keep well this fiduciary relationship, or increase the fiduciary relationship persistency rates seems to be the bottom line in the insurance industry. In this paper, we developed a fiduciary relationship maintenance ratio based on comparison by case, which is represented with usually maintained contract months to paid months, based on each contract of the basis point. In this paper we have developed a new business model seeking the maximum profit with low cost and high efficiency, management policy of putting its priority on its substantiality, as an improvement measure to break away from the vicious circle of high cost and low efficiency, and management policy of putting its priority on its external growth(expansion of market share).

• Journal of Korea Multimedia Society
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• v.8 no.9
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• pp.1216-1226
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• 2005

In this paper, a preventive transmission rate decision algorithm, called PTRD, is proposed for the transmission of live video over networks with dynamic bandwidth allocation capability. Frame analyzer predicts the bit-rates of future frames before encoding by analyzing the source information such as spatial variances and the degree of scene changes. By using the predicted bit-rates, transmission rate bounds are derived from the constraints of encoder and decoder buffers. To resolve the problem of renegotiation cost increment due to frequent renegotiations, the PTRD algorithm is presented to decide transmission rates considering the elapsed time after the recent renegotiation and the perceived video quality. From the simulation results, compared to the normalized LMS based method, PTRD is shown to achieve high channel utilization with low renegotiation cost and no delay violation.