• The Safety technology
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• no.90
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• pp.16-20
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• 2005

• Journal of Korea Port Economic Association
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• v.27 no.1
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• pp.31-54
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• 2011

This paper classifies and defines the infrastructure factors required to performance various logistics activities in domestic logistics centers as base facility, logistics facility, logistics equipment and operation system. The classification of infrastructure factors in this research provide the standard to be able to identify which infrastructure influence on logistics activities directly or indirectly. Also, this paper reviews Korean industrial Standards('KS') related to logistics center and then suggests the reformation of KS reflected on the logistics activities and infrastructures with field-study(321 domestic centers) and advisory meeting1). This review and suggestion can increase the low awareness and use of KS. Lastly, this paper can contribute to increase the effective of logistics centers' plan and operation by providing the improvement direction of KS regarding to logistics centers.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.19 no.12
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• pp.1394-1401
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• 2008

This work investigates the effects of vibration on the passive intermodulation distortion characteristics of base station antennas for 800 MHz CDMA mobile communication systems. In general, base station antennas are located at high positions such as on building rooftops or iron towers. Thus the antennas are always affected by random vibrations, coming from various natural environmental factors such as rain and wind, or from living environmental factors such as vehicles and trains passing by. The measured intermodulation distortion characteristics before and after vibration accelerated degradation test show that vibrations are indeed the main cause for the intermodulation distortion performances of such antennas. To minimize the effects of vibrations, a new antenna design isptoposed that has an improved tolerance for vibrations. Experimental results show that the proposed antenna design dramatically reduces the degradation of the intermodulation distortion more than 35 dB.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.29 no.4
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• pp.847-857
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• 2019

Recently, various cyber threats such as Ransomware and APT attack are increasing by e-mail. The characteristic of such an attack is that it is important to take administrative measures by improving personal perception of security because it bypasses technological measures such as past pattern-based detection The purpose of this study is to investigate the human factors of employees who are vulnerable to spam mail attacks through field experiments and to establish future improvement plans. As a result of sending 7times spam mails to employees of a company and analyzing training report, It was confirmed that factors such as the number of training and the recipient 's gender, age, and workplace were related to the reading rate. Based on the results of this analysis, we suggest ways to improve the training and to improve the ability of each organization to carry out effective simulation training and improve the ability to respond to spam mail by awareness improvement.

• Land and Housing Review
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• v.14 no.1
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• pp.67-82
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• 2023

Using the Artificial Neural Network model and Binary Logistic Regression model, this study investigates influence factors on the quality of life in terms of housing environment during the COVID-19 in Seoul. The results show that the lower the satisfaction level of housing policy, the lower the quality of life in the employment field and the lower the quality of residential field. On the other hand, permanent workers and self-employed respondents have experienced improvement in residential quality during the pandemic. A limitation of this study is associated with disentangling the causal relationship using the 'black box' characteristics of ANN method.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.222-224
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• 2016

본 연구에서는 우리나라 도선 서비스 현황과 운영제도 및 구조적인 문제점을 살펴보고 현행 도선 서비스가 가지고 있는 문제점을 계층적으로 분석하여 최우선적으로 개선해야 할 우선 순위를 도출하고자 한다. 우리나라의 도선 서비스 개선에 관한 주요 요인들 중에서, 첫번째로 도선사의 서비스 마인드가 가장 중요한 항목으로 나왔으며, 세부평가 속성들 중에서도 도선 서비스의 재평가가 최고우선 평가항목으로 도출되었다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2006.05a
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• pp.1240-1245
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• 2006

PCB는 수십개의 주공정과 보조공정으로 구성된 제품으로 동일한 생산라인에서 로트 단위로 다품종 혼류 생산되고 있다. 따라서 PCB 제조라인에서는 많은 공정수, 높은 불량률, 다양한 공정설비 및 빈번한 설비고장, 중소기업의 낮은 설계 및 생산기술력, 빈번한 수주 변경 및 다품종 혼류, 긴급 수주 등과 같이 제조원가를 증가시키는 다양한 교란요인들이 항상 발생하고 있다. 본 연구에서는 생산성, 품질 등을 고려하면서 리드 타임을 단축하기 위하여 TOC DBR 기법을 개선한 2개의 DBR 개념을 도입하여 성공적으로 리드타임을 개선한 사례를 소개하고자 한다.

• Proceedings of the Korea Contents Association Conference
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• 2004.05a
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• pp.169-175
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• 2004

현재 우리나라의 수돗물 생산 대비 부과요금, 즉 유수율은 전국 평균 약 75％에 머무르고 있는 실정이다. 이는 생산원가의 상승요인이 되어 결국은 시민의 요금부담을 가중시킴은 물론 지자체의 재정압박이 되고 있는 것이 현실이다. 이에는 효율적인 검침개선과 유수율 향상을 위해 AMR(자동검침시스템)을 활용한 시간적, 공간적 각종 경비절감과 과금현실화, 민원감소 등을 통한 효율적 물관리와 사용으로 유수율의 향상 및 개선을 위한 방법과 대안을 청주시를 중심으로 GIS와 연계하여 제시하고자 한다.

• Proceedings of the Korean Nuclear Society Conference
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• 1997.05b
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• pp.636-642
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• 1997

원자력 수출시 적용되어야 할 여러 가지 통제지침을 분석하고 원자력 수출제도상의 문제점을 살펴보았다. 한국 표준형 원자력 발전소의 해외진출에는 외적요인으로 제3국에 재 이전시 원공급국의 사전동의권과 원자력관련 국제협약이나 제도상 부과된 공급조건의 이행보장을 당사국으로부터 받아야 하는 점이다. 이에 대한 최선의 해결책은 공급국과 수입국 사이에 원자력협력협정을 체결하는 것이다. 국내 원자력 수출체제의 개선점으로는 원자력 전용품목에 대한 수출허가 절차의 개선과 원자력 통제품목의 재 이전에 대한 대비책이다. 원자력해외진출에 기존 원자력 선진국의 영향을 최소화시키기 위해서는 국제적인 원자력 통제지침의 이행을 통하여 대외 신뢰도를 구축해 나아감과 동시에 해외공동 진출을 모색하는 것이 최선이라고 사료된다.

• The Journal of the Korea Contents Association
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• v.12 no.7
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• pp.346-357
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• 2012

This study classified the various quality features of coffee shop by Kano model with customers' perspective. Also both satisfaction coefficient and dissatisfaction coefficient are calculated to analyse the relative influence of quality features on customer satisfaction. This study also dragged the potential customer satisfaction improvement index to scrutinize the quality improvement possibility for coffee shops. The analysis results showed that low price, luxurious interior, restfulness of table and chair, usability of wireless internet are belonged to the Attractive quality. On the other hand, cleanliness and hygiene, quality to price are identified as the One-dimensional quality. The current satisfaction level for both 'Caffe Bene' and 'Starbucks' are measured to draw the potential customer satisfaction improvement index. The result showed that low price and quality to price appeared to be the highest in its quality improvement possibility. The findings of this study help understanding the quality features to focus on and strengthening the competitiveness for coffee shops.