• 한국시스템다이내믹스연구
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• 제14권3호
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• pp.105-134
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• 2013

Electrical construction business has public and professional characters. It may require appropriate interventions of the government because these business activities stand for not only profit-seeking competition, but also supplies of one of the key functions in our society. In other words, public benefit and private benefit are still in existence. The government therefore considers such an aspect of public importance of the business sector and needs to plan to adjust technical and engineering manpower of this market. This study focuses on the imbalance for labor supply and demand of technical engineer in electrical construction business. A system dynamics analysis is applied to understand and simulate the imbalance as a soft approach. It has the merit of causal loop diagram to alleviate the limitation of data lack problem. We find that excess demand is expected from 2010 to 2011, and excess supply is predicted from 2012 to 2021 about the manpower of technical engineer. It shows considerable disagreement between the supply and demand of human resource. So we suggest that it is strong necessity to construct statistics infrastructure for a manpower supply and demand plan.

• 한국전산구조공학회논문집
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• 제30권6호
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• pp.501-506
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• 2017

적외선 유도 미사일은 미사일에서 자체적으로 방사하는 신호가 없어 항공기에서 접근을 인지하고 대응하기가 어렵다. 또한 적외선 유도 미사일을 탐지하는 MAW(missile approach warning)는 고가의 장비로 현재는 항공기에의 사용이 제한되고 있으며 그 효용성이 공개된바가 없다. 따라서 본 연구에서는 MAW가 탑재되어 항공기가 접근하는 유도 미사일에 대해 회피기동을 수행할 때 항공기의 생존성이 얼마나 증가하는지를 해석하여 MAW의 효용성을 평가하고자 하였다. 생존성의 평가지표로 위험 거리를 사용하였으며 고도 5km를 마하 0.9로 비행하는 항공기에 대해 AIM-9 적외선 유도 미사일이 접근하는 상황에 대한 위험 거리를 방위각 별로 도출하였다. 항공기의 회피기동에 대한 변수로는 5~7km의 MAW 인지거리와 3~7G의 항공기 기동성능을 고려하였다. 해석 결과 MAW를 통한 미사일 접근 인지와 회피기동 만으로도 위험 거리가 상당히 감소하는 것을 확인했다. 회피기동에 따른 위험 거리의 감소는 최대 29.4%로 나타났다. 또한 상대적으로 향상시키기 어려운 항공기 기동성능보다는 MAW 인지거리를 증가시키는 것이 위험 거리의 감소에 더 효과적인 것으로 나타났다.

• International Journal of Contents
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• 제12권4호
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• pp.1-7
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• 2016

The purpose of this study was to identify the factors that motivate nurses. Data were collected from 373 nurses employed at 4 general hospitals located in Seoul, Korea. Nine research instruments were used in the formulation of a questionnaire. Data analysis was conducted using SPSS 18.0. The mean score of motivation was 3.49. The major influential background factors for motivation among the hospital nurses were growth needs (${\beta}=0.31$, p<0.001), auto-suggesting strategies (${\beta}=0.20$, p<0.001), optimism (${\beta}=0.18$, p<0.001), problem solving and cognitive restructuring strategies (${\beta}=0.11$, p=0.035), extroversion (${\beta}=0.10$, p=0.027), and support-seeking strategies (${\beta}=0.09$, p=0.036). These factors accounted for 40% of the motivation for nurses. Identifying the major factors would therefore serve as predictors to motivate nurses, and we further discuss how these findings might benefit an employer.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제44권4호
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• pp.143-150
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• 2018

The number of geriatric patients seeking dental service is ever-rising because of increased life expectancy, also with problem of increased chronic medical conditions. One of them are patients on anti-thrombotic medication. Bleeding complication after minor oral surgery by anti-thrombotic agents is of concerns to dentists on dental management of these patients. Risk and benefit of the anti-thrombotic agents must be weighed before initiating dental procedures, which should be established as a treatment guideline. Purpose of the paper is to optimize the management of the dental patients on antithrombotic medication via standardization of treatment protocol of such a patient.

• 산업경영시스템학회지
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• 제26권3호
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• pp.50-57
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• 2003

In this paper, we consider an integrated inventory system where a single supplier purchases and processes raw materials in order to deliver finished goods to a single buyer for effective implementation of Just-In-Time purchasing. An integrated JIT lot-splitting model of facilitating multiple shipments in small lots is developed in a JIT purchasing environment. Also, an iterative solution procedure is developed to find the order quantity for the finished goods and raw materials, and the number of shipments between buyer and supplier. We show by example that the integrated policy adopted by both buyer and supplier in a cooperative manner can provide them a greater economic benefit than seeking the local optimal inventory policy independently.

• 한국인구학
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• 제14권2호
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• pp.1-17
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• 1991

While various fiscal measures have been used to influence regional capital inflow or industrial location, the effect of fiscal variables on labor mobility has been little understood. Understanding the relationship between the composition of local public and urban migration would enhance the city govenment's ability to pursue an appropriate population policy. In order to examine the potential for local public finance to be utilized as a policy tool in directing urban population growth, this paper analyzes the impact of local government financial structure on urban migration. In examining the data on local government finance and the changes in population of Korean cities during the last ten years, it was found that cities with high per capita expenditure in regional development have experienced high population growth rates. In this study migration equations were constructed using various fiscal variables such as the proportion of special account expenditures which are mostly spent for local development purposes, per capita regional development expenditure, degree of local financial independence and per capita net fiscal benefit, along with other explanatory variables. The results of regression analysis showed that city government's regional development expenditure variables have a positive effect on urban net migration and a negative effect on outmigration. Fiscal independence and per capita net fiscal benefit had mixed effects on in and out migration variables, implying that local tax burden does not consistently deter inmigration or induce outmigration. Based on the results of this study some important policy implications can be found regarding local government's fiscal policies. Those cities seeking to attract higher population inflow should make a greater effort in appropriating local expenditures for regional development purposes such as infrastructure, housing, and transportation. city governments should not be too concerned about high local tax burden or necessarily seek to enhance financial independence for these factors do not exert a clear influence on urban population growth or labor supply.

• 한국도서관정보학회지
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• 제36권2호
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• pp.197-220
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• 2005

본 연구는 인터넷 서점 이용자의 신념, 가치 태도 등의 주관성(Subjectivity) 구조의 특성을 Q 방법론으로 규명하였다. 본 연구는 36개 Q 표본과 28명 P 표본을 구성하여 2005년 4월 15일에서 22일까지 8일간 조사를 하였다. 본 연구는 다음의 같다. 첫째, 인터넷 서점 이용자 구조는 3가지 유형이었다. 제1유형은 "경제적 이익추구형"이다. 이들의 인터넷 서점 이용은 경제성을 추구하는 목적지향적인 행위이다. 이들은 인터넷 서점이 제공하는 컨텐츠보다는 저렴한 책값에 관심을 두었다. 이 유형은 주로 대학생 계층에서 두드러졌다. 제2유형은 "정보추구형"이다. 이들은 새로운 정보나 전문적인 정보를 얻기 위하여 인터넷 서점을 방문한다. 이들은 여성계층에서 뚜렷하였다. 제3유형은 "편의추구형"이다. 이들은 인터넷 서점이 보유하고 있는 접근가능성, 편리함 등에 관심을 두고 있으며 현실적인 문제(예, 배송, 책간 활용가능성, 경품권제공, 결제 등)에 관심을 두었다 이들은 직장인 계층에서 두드러졌다. 인터넷 서점은 향후 다양한 이용자들의 욕구를 충분히 파악하여 세분화되고 차별화된 이용자 지향 정책을 마련해야 할 것이다.

• 한국간호교육학회지
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• 제19권2호
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• pp.241-250
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• 2013

Purpose: The purpose of this study was to identify the attitude toward multi-cultural families. Method: The Q-methodology which provides a method of analyzing the subjectivity of each item was used. Thirty nurses classified the 34 selected Q-statements into a normal distribution using a 9 point scale. The collected data was analyzed using the Quanl PC program. Result: Four types of attitudes toward multi-cultural families were identified. The first type(value-neutral acceptance) considered multi-cultural families as individual's choice so they accepted it as one type of families and they persisted that nobody can oppose or blame for it. The second type(inevitable acceptance) considered multi-cultural families as a necessary evil that can solve the problem of old bachelors' seeking marriage. The third type (NIMBY: Not in my backyard) understood various advantage of multi-cultural families but they opposed their own family's intermarriage. The fourth type(negative prejudice) considered intermarriage as trading for the benefit of each other and they had strong antipathy against multi-cultural families. Conclusion: The results of the study indicate that different approaches of educational program based on the four types of attitudes toward multi-cultural families are recommended.

• Carbon letters
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• 제10권1호
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• pp.43-51
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• 2009

Carbon fibers are a new breed of high-strength materials. The existence of carbon fiber came into being in 1879 when Edison took out a patent for the manufacture of carbon filaments suitable for use in electric lamps. However, it was in the early 1960s when successful commercial production was started, as the requirements of the aerospace industry for better and lightweight materials became of paramount importance. In recent decades, carbon fibers have found wide applications in commercial and civilian aircraft, along with recreational, industrial, and transportation markets as the price of carbon fiber has come down and technologies have matured. The market for carbon fiber has experienced a good growth in recent years. The growth rate for the last 23years was about 12%. The article reviewed 9,641 Korea, U.S., Japan, Europe patents issued in the carbon fibers in order to offer additional insight for researchers and companies seeking to navigate carbon fiber patent landscape. This article will provide you with all the valuable information and tools you will need to investigate your study successfully within the carbon fiber field. This article also will save you hundreds of hours of your own personal research time and will significantly benefit you in expanding your business in the carbon fiber market.

• Asia pacific journal of information systems
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• 제25권2호
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• pp.370-402
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• 2015

The dynamic capabilities of social media are changing the nature of contemporary news by allowing users to communicate and create content, deliver and share newsworthy information, and consume news. News organizations engage with social media because this computer-mediated tool provides an alternative platform for delivering news and connecting with global audiences. This role of social media is conceptualized as its complementarity. However, when mass user-generated-content is constantly shared with other users, more users are attracted to indulge in news-seeking activities on social media. This phenomenon potentially fulfills users' news requirements on social media, which is contrary to what news companies envisioned when they began engaging with social media. This dichotomous role of social media, providing complementarity and showing the potential for becoming a superior news medium, is conceptualized as its competing-complementarity. This paper offers preliminary evidence of competing-complementarity by analyzing the news consumption of individuals. Such consumption is explained through the theoretical perspective of punctuated equilibrium by conceptualizing news consumption as a deep structure radically impacted by a disruptive technology. Although social media benefit news organizations, its competing potential poses serious challenges to their monopolistic controls on news production, distribution, readership, and revenue generation.