• 유통과학연구
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• 제11권5호
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• pp.63-76
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• 2013

Purpose - For the past several decades, behavioral economics or behavioral decision theory has undergone rapid development. This study provides a critical review of the development of behavioral economics with a focus on what are deemed to be core theories in the field. Starting from the utility function proposed by Daniel Bernoulli in the 18th century, the development history of utility functions until the emergence of the prospect theory is thoroughly reviewed. Some of the experimental results violating the traditionally assumed utility function and supporting the prospect theory value function are summarized. The most representative principles of rational choice are transitivity, independence from irrelevant alternatives (IIA), and regularity. The development of behavioral economics has been triggered by finding counter-examples to these principles. Some of the choice behaviors discussed in this study as counter-examples to the traditional theories of rational choice are the St. Petersburg paradox; the Allais paradox; gambling behavior; and the various context effects including the similarity effect, attraction effect, and the compromise effect. The Elimination-by-Aspects (EBA) model, which was proposed as an explanation for the similarity effect, is discussed in detail as well. Based on the literature review and further analysis, this study summarizes the relationship between the context effects, prospect theory, and EBA model. Research design, data, and methodology - This study provides an extensive literature review on several important theories in the field of behavioral decision theory and adds some critical comments to the theories and the relationships among them. This study first reviews the development of utility functions. Daniel Bernoulli introduced the concept of utility function to solve the St. Petersburg paradox. In the mid-20th century, Herbert Simon proposed the "satisficing" heuristic and presented a value function with a shape different from traditional utility functions. This study highlights the strengths and weaknesses of several utility functions proposed until the emergence of the prospect theory value function. Results - This study posits that prospect theory and EBA model are the two most important theories in the field of behavioral decision theory. They can explain various choice behaviors that traditional utility maximization analysis has been unable to. The application of these models to various fields is further increasing nowadays. This study explains how prospect theory and the EBA model can be used to explain the context effects. Conclusions - The traditional economic theory relies on a single variable called "utility" in explaining consumer choice. However, this study argues that, in investigating consumer choice, several other variables should also be considered. These are the similarity among alternatives, an alternative's prototypicality within the category, the dominance relationship between alternatives, and the reference point in evaluating alternatives. Due to the development of behavioral economics, we are now closer to a more complete understanding of consumer choice behavior than in the past when we had only a single tool called utility.

• 기술혁신연구
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• 제26권1호
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• pp.1-30
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• 2018

본 연구는 과학기술행정체제와 혁신 거버넌스 연구의 큰 변화 흐름을 살펴보고, 성찰적 자리매김을 통해 향후 나아가야 할 방향을 제시하였다. 분석 대상은 "한국행정학회보", "한국정책학회보" 등의 행정학 조직학 분야와 "과학기술학연구", "기술혁신연구", "기술혁신학회지" 등의 과학기술혁신 분야에 실린 과학기술행정체제 및 혁신 거버넌스 관련 논문을 중심으로 살펴보았다. 이와 함께 각 학회 학술대회 발표 논문과 주요 저서, 그리고 과학기술정책연구원 한국행정연구원 등 국책 연구기관에서 발표된 정책보고서와 정부 문건자료도 분석에 포함하였다. 분석 결과, 연구 자체가 정부조직개편의 일부에서 독자 영역으로 진화하고 그 주제도 세분화되었으며, 역사적 규범적 비교분석 제도론적 접근방법이 주를 이루었다. 또한 과학기술정책의 조정 통합 문제가 연구에서 중요한 과제로 다루어졌으며, 혁신체제론(NIS) 및 거버넌스 관점이 연구에 반영되기 시작했다. 그러나 작은 정부론과 큰 정부론, 거버넌스론과 컨트롤 타워론 등 몇 가지 차원에서 여전히 쟁점을 드러내고 있으며, 귀인 오류, 합리적 모형의 지배, 처방위주의 연구와 연구의 쏠림, 거대 및 세부 담론의 부재 등에서 한계를 러내고 있다. 향후 과제로 합리성 효율성 종합성 설계의 관점에서 벗어나 진화적 합리성 강조, 다차원적 연구 방법론 활용, 한국적 이론 개발과 보편성 확보, 거버넌스 관점의 주류화, 조직문화 등 소프프웨어 측면에 관한 연구 촉진 등을 제시하였다.

• 성인간호학회지
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• 제12권4호
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• pp.517-532
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• 2000

The purpose of this study was to develop a critical pathway for case management of patients who have received Lumbar Laminectomy because of low back pain, arm and leg numbness, and radiating pain in the leg. For this study, a preliminary critical pathway was developed through a review of the literature including five critical pathways which are currently being used in the USA. In order to identify the overall service contents required by these patients, 30 cases were analyzed. These cases were taken from medical records of those with Lumbar Laminectomy between January, 1998 and December, 1998 in the department of neurosurgery at the Pusan National University Hospital in Pusan. An expert validity test was done for the preliminary critical pathway, a clinical validity test was also done using 12 patients with Lumbar Laminectomy between October 1, 1999 and January 31, 2000. After these processes, the final critical pathway was developed. The results are summarized as follows. 1. The vertical axis of the critical pathway includes the following eight items: assessment, consultation, diet, test, medication, treatment, activity, education/ discharge planning. The horizontal axis includes the time from the start of hospitalization to discharge. Analysis of the 30 medical records was done. analysis of the service contents showed the horizontal axis of the preliminary critical pathway was set from hospitalization to the 12th post operation day and the vertical axis was set to include eight items, the contents which should have occurred, according to the time frames of the horizontal axis. 2. As a result of the expert validity test, it was found that among the 233 items, 203 showed over 88% agreement and 30 of them showed less than 88% agreement, which were then revised or deleted from the critical pathway. At the preliminary meeting for the clinical validity test, the time of hospitalization on the horizontal axis was shortened to the 10th post operation day. A clinical validity test was done with 12 patients with Lumbar Laminectomy. All the cases progressed according to the critical pathway although some variances were noted in assessment, consultation, test, medication, and treatment. 3. Based on these results, a final critical pathway was determined. In conclusion, this critical pathway is partially applicable to the care of patients with Lumbar Laminectomy and needs further investigation.

• 천문학회보
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• 제42권1호
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• pp.34.1-34.1
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• 2017

The GMT-Consortium Large Earth Finder (G-CLEF) is the very first light instrument of the Giant Magellan Telescope (GMT). The instrument is a fiber feed, optical band echelle spectrograph that is capable of extremely precise radial velocity measurement, and has been being developed through the international consortium consisted of five astronomical institutes including Smithsonian Astrophysical Observatory (SAO), Observatories of the Carnegie Institution of Washington (OCIW), and Korea Astronomy and Space Science Institute (KASI). The Preliminary Design Review (PDR) for the G-CLEF was held in Cambridge, Massachusetts in April 2015. It is scheduled to have Critical Design Review (CDR) in March 2018. Flexure Control Camera (FCC) is one of the KASI's major contributions to the G-CLEF project. In this presentation, we describe the current critical design status, and structural and thermo-elastic analyses results on the G-CLEF FCC.

• Tuberculosis and Respiratory Diseases
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• 제62권2호
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• pp.129-133
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• 2007

기관지내에 발생하는 신경집종은 매우 드물고 증상과 방사선학적 소견이 다양하게 나타난다. 진단을 위해서 기관지내시경을 통한 조직검사가 필요하지만 기관지내시경을 통한 조직검사에서도 확진이 되지 않을 수 있음을 고려해야 한다. 치료로는 기관지내시경을 통한 국소적 치료와 외과적 절제술이 있으며 환자의 상태, 종양의 위치 및 진행 정도 등을 고려하여 결정해야 할 것이다.

• 대한간호학회지
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• 제48권3호
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• pp.323-334
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• 2018

Purpose: The purpose of this study was to develop a scale to measure person-centered critical care nursing and verify its reliability and validity. Methods: A total of 38 preliminary items on person-centered critical care nursing were selected using content validity analysis of and expert opinion on 72 candidate items derived through literature review and qualitative interviews. We conducted a questionnaire survey with 477 nurses who worked in intensive care units. The collected data were analyzed using exploratory factor analysis (EFA) and confirmative factor analysis (CFA) with SPSS and AMOS 24.0 program. Results: EFA was performed with principal axis factor analysis and Varimax rotation. The 15 items in 4 factors that accounted for 50.8% of the total variance were identified by deleting the items that were not meet the condition that the commonality should be .30 or more and the factor loading over .40. We named the factors as compassion, individuality, respect, and comfort, respectively. The correlation coefficient between this scale and the Caring Perception Scale was r=.57 (p<.001), which determined concurrent validity. The item-total correlation values ranged from .39 to .63, and the internal consistency for the scale was Cronbach's ${\alpha}=.84$. Conclusion: The reliability and validity of the 15 item person-centered critical care nursing scale were verified. It is expected that the use of this scale would expand person-centered care in critical care nursing.

• Tuberculosis and Respiratory Diseases
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• 제81권4호
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• pp.261-273
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• 2018

Chronic obstructive pulmonary disease (COPD) results in high morbidity and mortality among patients nationally and globally. The Korean clinical practice guideline for COPD was revised in 2018. The guideline was drafted by the members of the Korean Academy of Tuberculosis and Respiratory Diseases as well as the participating members of the Health Insurance Review and Assessment Service, Korean Physicians' Association, and Korea Respiration Trouble Association. The revised guideline encompasses a wide range of topics, including the epidemiology, diagnosis, assessment, monitoring, management, exacerbation, and comorbidities of COPD in Korea. We performed systematic reviews assisted by an expert in meta-analysis to draft a guideline on COPD management. We expect this guideline to facilitate the treatment of patients with respiratory conditions by physicians as well other health care professionals and government personnel in South Korea.

• 중환자간호학회지
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• 제6권2호
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• pp.78-88
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• 2013

Purpose: The purpose of this study was to identify the trends in studies published in Journal of Korean Critical Care Nursing (JKCCN) from 2008 to 2013. Methods: A total of 65 studies published between 2008 to 2013 were reviewed using criteria developed by researchers. Results: Approximately 36% of studies were conducted with patients. Intensive care unit (ICU) was the most popular site as the study setting. Among 59 research papers, 42.4% were approved by institutional review board (IRB). Quantitative studies were 78.6%, while qualitative studies were 4.6%. The research designs for the quantitative studies were survey (52.3%), quasi-experimental (16.9%), and so on. There was no randomized controlled trial. The most frequently used methods to provide nursing intervention was education. In addition, "nurse" and "ICU" were most commonly used keyword. Conclusion: Considering the low rate of IRB approval, more stringent application of research ethics is necessary to improve the quality of JKCCN. In addition, more randomized controlled trials should be encouraged to support evidence-based practice in critical care.

• 한국도로학회논문집
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• 제15권4호
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• pp.177-186
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• 2013

PURPOSES: The purpose of this study theoretically reviews vertical grade deriving process in super high speed environment and compares overseas design criteria with Domestic Standardization also draws suitable vertical grade design criteria of high standard for Domestic Circumstances in Korea. METHODS : By researching domestic vehicle registration status, calculating typical vehicle, using Vissim which is traffic simulation program, Speed-distance curve of the vehicle is derived under each design speed condition. Through Speed-distance curve, estimating critical length of grade and considering critical length of grade, maximum longitudinal incline is proposed. RESULTS : The result of domestic vehicle registration status, the typical vehicle for deriving vertical grade is calculated based on gravity horsepower ratio 200 lb/hp. For calculating critical length of grade, according to change speed of uphill entry, speed-distance curve is derived by using Vissim. Critical length of grade is calculated based on design speed 20 km/h criteria which is point of retardation. Estimated critical length of grade is 808 m and based on this result, maximum longitudinal incline was confirmed in the design speed between 130km/h to 140km/h. CONCLUSIONS: The case of the typical vehicle(truck) which is gravity horsepower ratio 200 lb/hp, maximum longitudinal incline 2% is desirable at the super high speed environment in the design speed between 130km/h to 140km/h.

• 대한수학교육학회지:수학교육학연구
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• 제27권4호
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• pp.857-888
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• 2017

세계화, 다원화, 정보화, 과학기술의 발달에 따라 현대사회는 사회, 경제, 문화 등 광범위한 영역에서 급격한 변화를 겪고 있다. 이러한 사회적 변화에 따라 보다 민주적이고 평등한 미래사회로의 발전에 기여하는 수학교육방안의 탐색이 요구된다. 본 연구는 비판이론으로부터 발달한 비판적 교육이론 및 비판적 수학교육이론에 대한 문헌분석을 통해 비판적 수학교육의 목표, 교수-학습 내용 및 방법을 도출하여 비판적 수학교육 프로그램 개발에 적용할 수 있는 모델을 구성하였다. 또한 문헌분석에 기초하여 개발한 프로그램 모델을 비판적 수학교육 사례에 적용하여 모델의 타당성을 확인하였다. 마지막으로 비판적 수학교육 프로그램 모델 개발에 기초한 시사점을 논의하였다.