• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.976-977
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• 2023

본 논문은 시각장애인 안내견이 부족한 상황 개선과 시각장애인에게 안전하고 자유로운 이동을 제공해주는 "시각장애인의 안전한 이동을 도와주는 지능형 카트"를 제안한다. 주요 특징은 다음과 같다. 첫째, 지문 인식 센서를 활용해 지문 등록 후 본인 인증을 하고 압력 센서를 활용해 카트 손잡이를 잡았을 경우에만 카트가 출발하도록 한다. 둘째, 라이다, 카메라를 이용하여 자율 주행 한다. 셋째, 음성인식 통해 목적지 설정, 속도 조절, 경고 알림 기능을 제공한다. 넷째, 짐칸을 설치하여 음성인식으로 여닫을 수 있도록 한다. 다섯째, 앱을 통해 카트 운전 모드를 변경할 수 있다.

• Information Systems Review
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• v.17 no.3
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• pp.39-64
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• 2015

As information and information technology become more important in competitive corporate environments, the risk of information security breaches has increased accordingly. Although organizations establish security measures to manage information security risks, members of organizations do not comply with them well, and their information security behavior intention is unclear. Therefore, to understand the information security risk management intention of the members of organizations, the present study developed a research model using Protection Motivation Theory, Supervisory Authority Pressure, and Background factors. This study presents empirical research findings based on the analysis of survey data from 201 members of financial institutions. Perceived Severity, Self-efficacy, and Supervisory Authority Pressure had a positive effect on intention; however, Perceived Vulnerability and Response Efficacy did not affect intention. Security Avoidance Habit, which was considered a background factor, had a negative effect on all parameters, and did not have an effect on intention. Security Awareness Training, another background factor, had a positive effect on information security risk management intention and perceived vulnerability, self-efficacy, response efficacy, and supervisory authority pressure, and had no effect on perceived severity. This study used supervisory authority pressure and background factors in the field of information security, and provided a basis to use supervisory authority pressure in future studies on behavior of organizations and members of an organization. In addition, the use of various background factors presented the groundwork for the expansion of protection motivation theory. Furthermore, practitioners can use the study findings as a foundation for organization's security activities, and to improve regulations.

• Journal of Korea Port Economic Association
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• v.39 no.2
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• pp.143-163
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• 2023

This study aims to analyze the impact of ESG activities on the corporate performance of logistics companies in Korea. To achieve this, the study examines the factors influencing the adoption and implementation of ESG activities, assesses the extent to which ESG activities enhance corporate trust and image, and empirically analyzes the effect of ESG implementation on the corporate performance of logistics companies. An online survey was conducted using Google Forms for Korean logistics companies, and a total of 463 data sets were utilized for PLS structural equation analysis using the SmartPLS 4.0 software tools. The findings of the study are as follows: Firstly, external pressure, specifically government pressure, significantly influences environmental responsibility activities, while investor pressure significantly affects social responsibility activities and governance responsibility activities. Additionally, internal management pressures significantly impact environmental responsibility activities, and employees have a significant influence on all ESG responsibility activities. Secondly, environmental responsibility activities positively affect corporate image, whereas social and governance responsibility activities influence trust and corporate image. Thirdly, trust and corporate image demonstrate significant effects on both financial and non-financial performance. Fourthly, trust significantly mediates the relationship between social responsibility, governance responsibility, and non-financial performance, while image mediates the connection between ESG responsibility and both financial and non-financial performance. The contribution of this study lies in providing practical insights for logistics companies to actively promote ESG activities, thereby establishing a reputation for being environmentally, socially, and governance responsible and gaining customer trust. By doing so, this study aims to raise awareness of the importance of ESG activities in the logistics industry and help companies recognize their significance for sustainable management

• The Korean Journal of Applied Statistics
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• v.29 no.7
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• pp.1385-1398
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• 2016

A pressurizer is a major equipment system in a nuclear power plant (NPP) and controls the reactor cooling system pressure within the allowable range. Faults in the pressurizer can be critical to the NPP; therefore, early fault detection in the pressurizer is significant for NPP safety. This study applies Mahalanobis Taguchi system (MTS), which is one of the promising pattern classification methods, based on the Mahalanobis distance concept and Taguchi quality engineering theory to the early fault detection problem of the pressurizer pressure control system. We conducted experiments using data from full scope NPP simulator based on a pressurizer pressure transmitter faults scenario to validate the faults detection performance of MTS. As a result, MTS can rapidly detect the faults compared to conventional faults detection based on single sensor monitoring.

• CRM연구
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• v.3 no.2
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• pp.1-20
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• 2010

Due to the nature of teenage students' common tendency of being drawn to consumption conformity engendered by popular trends, and further expanding their unique collectivist culture, this study presumes that middle and high school female students as well have an influential factor that creates their distinctive trait. This study is intended to investigate the students' personal characteristics and effects of social reference groups, and further scrutinize how these influences transcends to deviant make-up behaviors. A total of 297 subjects, middle and high school female students, participated in a survey, using questionnaires focused primarily on the degrees of color makeup and the influences imposed by classmates. The findings of the study are as follows. First, regarding makeup behavior displayed by middle and high school female students, social self-esteem had positive influence on innovation and peer pressure. Second, perceived visibility conversely had negative impacts on innovation and peer pressure. This indicates that if perceived visibility is at a salient level, this already signifies lack of innovation. Third, makeup innovation and peer pressure demonstrated by middle and high school students all showed positive influence on their makeup behaviors. Additionally, peer pressure, in comparison to innovation, had greater influence on makeup behaviors, which indicates that peer pressure play a great role in makeup behavior of middle and high school students. Fourth, makeup behaviors showed strong impacts on makeup satisfaction and rendering deviant behaviors, which indicates that a new direction and perspective regarding middle and high school students' makeup behavior is critical.

• The Korean Journal of Elementary Counseling
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• v.8 no.1
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• pp.67-78
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• 2009

The purpose of this study was to examine the influence of parent's accomplishment pressure and career guidance on children's career development. The subjects in this study were 59 six-graders in an elementary school. Added to this, this study was to understand the course of elementary school children's career development. For the study, research questions on influence of parent's accomplishment pressure and career guidance on children's career development were set up. The study showed three findings. First, there was significant correlations between parent's accomplishment pressure, and career guidance and children's career development. Parent's accomplishment pressure showed a positive correlation with career development and career guidance had a significant correlation with children's career development. The sub factors of career guidance, except for emotional support, were also significantly correlated with the sub factors of children's career development. Second, Parent's accomplishment pressure didn't show significant effect on fitness of career choice, sex-prejudice and pride, but showed significant effects on total career development, career directivity, career comprehension, self-comprehension and self- control. Third, parent's career guidance showed additional impact on children's career development. But emotional support, which is the sub-fact of career guidance, had no correlation with career development.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2011.04a
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• pp.245-248
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• 2011

A multi pulse rocket motor(MPRM) has several advantages compared to the single one. The range and the terminal velocity of the guided missile can be remarkably increased by the application of the pulse separation device(PSD) to the solid rocket motor which resulted in appropriate thrust distribution. In this study, the full scale heavy type dual pulse rocket motor with the bulkhead type PSD was designed, manufactured, and fire-tested. The bursting time and pressure of PSD were analyzed by the pressure, thrust and vibration results of static fire tests. As a result, the design requirement was verified that bursting pressure is lower than 30% of 2nd pulse operating pressure.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2000.04a
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• pp.13-13
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• 2000

일반적으로 고체추진 로켓 모타의 개발단계 때 공통적으로 수행되는 주시험(main test)으로는 추력, 압력, 회전률 등의 성능측정을 하기 위한 정적연소시험(static firing test), 내부 정수압(hydrostatic pressure)에 의한 폭발 압력 시험, 연소중이나 연소 후 케이스에 대한 굽힘 강성 시험, 이외에 노화 시험, 환경시험 등이 요구된다. 그러나 신궁과 같은 휴대용 대공 시스템의 추진기관 개발의 경우에는 사수를 보호하기 위해 여러 가지 안전장치들이 설계되고, 이러한 장치들의 성능에 대한 요구 조건들을 확인하기 위한 특수시험(specific test)들이 필요하게 된다. 이러한 특수시험을 위한 각종 시험대들을, 위에서 언급한 주시험을 위해 사용되는 정적시험대(static test bench)들과 구분하기 위해 동적 시험대(DTB : Dynamic Test Bench)라고 한다. 본 연구에서는 신궁 추진기관의 사출모타 점화에서 비행모타 점화에 이르는 일련의 비행절차를 확인하기 위한 동적 시험대 설계 및 제작, 계측장치 구성 및 데이터 획득 방법 등에 관한 내용을 소개하며, 동적 시험대에서 수회에 걸쳐 수행된 동적 시험 결과를 분석/정리하였다.

• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.1829_1830
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• 2009

본 논문은 로봇이 처한 환경의 실시간 상황 인식을 위한 지능형 센서 인터페이스를 연구 개발하여 다양한 환경에서의 안정되고 유연한 이족 보행 로봇의 동적 보행 제어를 수행하였다. 자이로 및 가속도 센서를 적용한 실험을 통하여 간단한 보상만으로도 로봇의 안정도가 확연히 개선되는 사실을 알 수 있었다. 미지의 외력이 가해져 로봇이 불안정한 상태가 계속될 때 상체의 기울기 보정이 무게중심을 보다 안정된 영역쪽으로 이동시켜 곧바로 균형을 잡아준다. 또한 압력센서를 이용한 ZMP 측정과 이를 통한 균형 제어 실험 결과 뛰어난 보행을 구현할 수 있었다. 불규칙적인 지면에서도 발바닥에 가해지는 압력 분포가 변화하는 것을 이용하여 ZMP가 항상 로봇의 발바닥 지지 영역 안으로 오도록 제어하였다. 이것을 통해 로봇은 경사면을 보행하거나 기울기가 변하는 바닥에서 쓰러지지 않고 안정한 상태를 유지하였다.

• Geotechnical Engineering
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• v.3 no.3
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• pp.63-74
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• 1987

A practical constitutive equation with sufficient generality is proposed for porous materials to deal with plastic pore compaction and pore related strain-hardening. With an application of this proposed model, finite element calculations are executed for the compaction of a porous material. Results show powerful potential of finite element method in a quantitative investigation of the process of the compaction. Special attention is given to the process of unloading during which the development of tensile principal stress may lead to phenomena such as lamination and end-capping.