• Bulletin of the Korean Chemical Society
• /
• v.34 no.11
• /
• pp.3301-3306
• /
• 2013

This paper aims to address the cellular toxicity of ultra-pure titanium dioxide ($TiO_2$) and zinc oxide (ZnO) nanoparticles (NPs) frequently employed in sunscreens as inorganic physical sun blockers to provide protection against adverse effects of ultraviolet (UV) radiation including UVB (290-320 nm) and UVA (320-400 nm). In consideration that the production and the use of inorganic NPs have aroused many concerns and controversies regarding their safety and toxicity and that microsized $TiO_2$ and ZnO have been increasingly replaced by $TiO_2$ and ZnO NPs (< 100 nm), it is very important to directly investigate a main problem related to the intrinsic/inherent toxicity of these NPs and/or their incompatibility with biological objects. In the present study, we took advantage of the laser-assisted method called laser ablation for generation of $TiO_2$ and ZnO NPs. NPs were prepared through a physical process of irradiating solid targets in liquid phase, enabling verification of the toxicity of ultra-pure NPs with nascent surfaces free from any contamination. Our results show that $TiO_2$ NPs are essentially non-poisonous and ZnO NPs are more toxic than $TiO_2$ NPs based on the cell viability assays.

• Journal of Korean Academy of Nursing Administration
• /
• v.19 no.1
• /
• pp.118-127
• /
• 2013

Purpose: The purpose of this study was to identify experiences of incidents and to explore the perceptions of Patient Safety Culture between two groups using nursing homes in Korea; employees and patients and their families. Methods: In 2010 in-depth interviews were used to collect data from 56 participants (38 employees, and 18 patients and family members). The data were analyzed using inductive content analysis. Results: The analysis scheme resulting from employees' data consisted of 7 categories and 22 subcategories, after 216 significant statements were analyzed and categorized. The 7 categories were education and training (24.5%), working attitude (23.6%), organizational system (19.0%), job satisfaction (18.5%), institutional environment (6.5%), manager leadership (4.2%), and work climate (4.7%). The analysis scheme resulting from patient and family data consisted of 6 categories and 7 subcategories after 24 significant statements were analyzed and categorized. Education and training among categories of employees were excluded. Conclusion: These findings indicate that an evaluation tool for patient safety culture should be developed for nursing homes in Korea.

• Korean System Dynamics Review
• /
• v.3 no.2
• /
• pp.49-68
• /
• 2002

The intent of this study is to develop system dynamics model for assessment of organizational and human factors in nuclear power plant which can contribute to secure the nuclear safety. Previous studies are classified into two major approaches. One is engineering approach such as ergonomics and probability safety assessment(PSA). The other is social science approach such like sociology, organization theory and psychology. Both have contributed to find organization and human factors and to present guideline to lessen human error in NPP. But, since these methodologies assume that relationship among factors is independent they don't explain the interactions among factors or variables in NPP. To overcome these limits, we have developed system dynamics model which can show cause and effect among factors and quantify organizational and human factors. The model we developed is composed of 16 functions of job process in nuclear power, and shows interactions among various factors which affects employees' productivity and job quality. Handling variables such like degree of leadership, adjustment of number of employee, and workload in each department, users can simulate various situations in nuclear power plant in the organization side. Through simulation, user can get insight to improve safety in plants and to find managerial tools in the organization and human side. Analyzing pattern of variables, users can get knowledge of their organization structure, and understand stands of other departments or employees. Ultimately they can build learning organization to secure optimal safety in nuclear power plant.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.22 no.5
• /
• pp.444-453
• /
• 2016

In this study, I suggested 'Mission command' as the on-scene commander's leadership intended to save people's lives quickly and safely when occured marine accident. First, I considered the concepts and limitations, efforts to introduce and settle the mission command, discussed why the introduction of mission command for Korea Coast Guard, the scope and specific way when applied. Korea Coast Guard must apply the Mission command as the on-scene commander's leadership to achieve efficient rescue work at the scene of an accident, even for incidents that can-not be foreseen. However, mission command cannot be established overnight: long-term, systematic efforts to stably develop mission command at the organizational level are required. We will strive to apply mission command across all aspects of the system, including education, training, personnel, and procedures, equipping each component with the basic requirements for mission command.

• Journal of the Korea Safety Management & Science
• /
• v.15 no.2
• /
• pp.121-128
• /
• 2013

The objectives of this study were to investigate the degrees of emotional labor, the effects to organizational effectiveness and the significant factors influencing organizational effectiveness in radiation therapy professional. The subjects of this study were the radiation therapists working at the hospital in Seoul and Gyungi. The self-reported questionnaires were administered to 205 radiation therapists and the data were analyzed with SPSS 19.0 package. The level of emotional labor of single or female subjects were revealed higher than married or male. The professionalism of job has significant correlation with emotional labor. Significant explanatory variables of the degrees of emotional labor included organization culture, distress and self-leadership. These three variables demonstrated the explanatory power of 13.9% of the emotional labor. Based on the findings, emotional labor of radiation therapist was correlated with occupational professionalism. These results suggest that the intervention program intervening emotional labor should be continued to develop in order to improve the effective self-leadership, organization culture and distress factor.

• Journal of the Society of Disaster Information
• /
• v.20 no.2
• /
• pp.430-439
• /
• 2024

Purpose: The purpose of this study is to analyze the impact of seven sub-components of the business continuity management system(BCM) on disaster management performance and disaster site response. Method: After establishing a hypothesis through prior research and conducting a survey of employees of telecommunication business organizations, a total of 327 pieces of data were gathered and the hypothesis was verified through statistical analysis. Result: First, the leadership, planning, support, operation, and performance evaluation of the business continuity management system were found to have a positive (+) impact on disaster management performance. Second, leadership, planning, support, operation, performance evaluation and improvement were found to have a positive (+) impact on disaster scene response. Conclusion: The business continuity management system was confirmed to have an overall significant impact on disaster management performance and disaster site response. In order to improve a company's disaster management performance and ability to respond to disaster scenes, it is necessary to establish and operate a business continuity management system.

• Korean System Dynamics Review
• /
• v.16 no.3
• /
• pp.5-29
• /
• 2015

The importance of the concept of safety culture has increased in the security of high-risk facility after Chernobyl accident in 1986. This paper elaborated the concept of safety culture and its main factors by Causal Loop Diagram. Due to the decline of safety culture, the occurrence of incidents and accidents require more and more corrective actions to the members of high-risk facilities and thereby increasing their workloads. Employees who must complete the task within the given time have to have time pressures and don't comply with the rules and procedures. Also, a schedule pressure is a big stress for employees, causing mistakes in precision work. In order to improve these problems, CLD of the safety culture in this paper suggests hiring more workers, re-allocation of given workloads and strengthen the learning, communication capabilities and safety leadership. In addition, the two real accident cases were analyzed to test the feasibility of the System Dynamic simulation model through the process of structuring the fault trees on the stationary black out accident in Kori unit 1 in South Korea and Kleen Energy power station explosion in US. The simulation results show that the various safety factors cause the serious accident combined with mechanical failure and safety culture will reduce the possibility of the accidents in these high-risk organizations. This simulation model can contribute to analyzing the impact of the organizational and human factors of safety culture and can provide the alternatives in high-risk facilities.

• Proceedings of the Safety Management and Science Conference
• /
• 2010.11a
• /
• pp.559-580
• /
• 2010

General Command in the whole situation, managed effectively in order to perform the first briefing room of the reorganization plan and the personnel, the situation room of the business division of the scope(function), information exchange and delivery quickly and accurately to support the computerized Communications equipment and system construction, and various field Construction activities related to the information database construction, and should be made to secure the expertise of management personnel. Building of Computer - communication systems equipment environment for new IT technologies is necessary. From this perspective, the leadership position in the country in the Disaster Management Center in Seoul, organization and personnel, computer systems and communication system status, status of foreign countries like Dispatch managing disaster situations by identifying and analyzing the development plan is aimed to find.

• Proceedings of the Safety Management and Science Conference
• /
• 2012.11a
• /
• pp.253-268
• /
• 2012

Recently, creative innovation has become a major topic in management innovation and due to this, various researches on its need and methodologies are being performed. According to previous studies on ambidexterity, explorative innovation is closer to divergent and right-sided brain, while exploitative innovation is closer to convergent and left-sided brain. Topic was to identify preceding element which affects Ambidextrous Innovation. For this topic, 129 Six Sigma projects from 19 different companies were collected. Ambidextrous index from preceding studies was used. This index represents the degree of ambidextrous activation and can be calculated by multiplying cumulative usage of exploitative tools with that of explorative tools. In the project characteristics, simple linear regression result showed leadership degree, team's vitalization degree and leader capability degree have effect in positive direction.

• Proceedings of the Safety Management and Science Conference
• /
• 2000.11a
• /
• pp.293-298
• /
• 2000

기업이 경쟁력을 위해 예전부터 노력했던 기본적인 세가지는 제품 선도력(ProductLeadership), 뛰어난 생산성(Operational Excellence), 고객 친화력(Customer Intimacy) 였다. 하지만 그 동안의 경영 혁신 활동 및 솔루션들은 상대적으로 뛰어난 업무 생산성(Operational Excellnce)에 집중되어 왔다. 그리하여 지속적인 생산성 향상 노력의 효과가 과거에 비해 점차 작아지고 생산성 향상에 요구되는 노력이 과거보다 더 커지기 시작한 것이다. 이에 비해 고객의 친화력을 향상시키기 위한 기업의 투자는 상대적으로 적었다. 개념적인 논의나 비정기적인 단발 투자에 그치는 경우가 많았고 체계적인 투자는 없었다. 여기에 CRM시스템의 구축에 대한 투자가 필요한 것이다. 현재 선진기업들은 "고객과의 관계를 통합적으로 관리"하는 CRM 시스템을 구축하는데 주력하여 물건 및 서비스를 판매하거나 고객의 요구를 수용하는 차원을 넘어서 개별 고객의 문제를 실시간 내지 사전적으로 해결하는 단계로 발전해 나가고 있는 실정이며 인터넷의 도입으로 고객과의 커뮤니케이션, 문제해결 빈도 및 속도가 획기적으로 개선되고 있다. 우리나라도 주요 기업들이 CRM에 많은 관심을 보이면서 관련시장이 급속히 신장하고 있는 이 시점에서 CRM 시스템에 관한 간략한 소개와 시스템의 구축시 고려해야할 문제점과 개선방향에 관하여 제시하고자 한다. 제시하고자 한다.