• 제목/요약/키워드: What-if Analysis

검색결과 462건 처리시간 0.034초

간호 대학생이 인식하는 간호사 이미지에 관한 내용 분석 (Content Analysis of Nurse Images Perceived by Nursing Students)

  • 박선정;박병준
    • 한국산학기술학회논문지
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    • 제15권6호
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    • pp.3696-3705
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    • 2014
  • 본 연구는 간호 대학생이 인식하는 간호사의 이미지를 확인하기 위해 수행되었다. 간호 대학생 2학년과 3학년을 대상으로 임상실습 전과 후에 간호사에 대하여 어떤 이미지로 인식하는지 조사하여 간호사의 이미지를 구축하고자 하였다. 간호사에 대한 정의, 필요성, 훌륭한 간호사란, 간호사의 편견에 대하여 파악하기 위해 면담을 실시하여 내용분석방법과 절차에 따라 대상자들이 진술한 내용을 범주로 구분하여 분석하였다. 분석결과 총 48개의 의미 있는 진술문과 14개의 범주로 구분되었다. 이를 토대로 전문적인 간호사로서의 자질과 환자와 가족 간의 상호작용을 증진이 필요하며, 간호사의 부정적인 이미지를 긍정적인 이미지로 재조정하여 이미지 향상이 필요하다고 생각된다. 본 연구는 강원도와 경기도에 소재한 2개의 간호학과를 대상으로 편의 추출하였으므로 연구결과를 일반화하여 확대 해석하기에는 제한이 있다고 본다. 따라서 더 많은 지역의 학생들을 대상으로 확대하면 좀 더 구체적이고 신뢰성 있는 자료를 산출할 수 있다고 사료된다.

정성적 위험 분석을 위한 버디 시스템의 구조 분석 (The Architectural Analysis of the Buddy System for Qualitative Risk Analysis)

  • Jeongwon Yoon;Kim, Hong-Keun
    • 한국정보보호학회:학술대회논문집
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    • 한국정보보호학회 1995년도 종합학술발표회논문집
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    • pp.51-58
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    • 1995
  • The importance of the risk analysis tool has been recognized and its use also has been emphasized by a number of researchers recently The methodology were examined but neither algorithms nor practical applications have been implemented or practiced in Korea. In this paper, the architecture of the Buddy System, one of the automated risk assessment tools. is analyzed in depth to provide the algorithmic understanding and to promote the development of the risk analysis methodology. The Buddy System mainly uses three main factors of vulnerability, threat and countermeasures as a nucleus of the qualatative analysis with the modified loss expectancy value. These factors are identified and assessed by the separation of duties between the end user and security analyst. The Buddy System uses five axioms as its bases of assessment algorithm and the assessed vulnerability level is strictly within these axioms. Since the In-place countermeasures reduce the vulnerability level up to a certain level. the security analyst may use "what if " model to examine the impact of additional countermeasures by proposing each to reduce the vulnerability level further to within the acceptable range. The emphasis on the qualitative approach on vulnerability leveling is very well balanced with the quantitative analysis that the system performance is prominent.prominent.

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EBA 모형을 활용한 유사 컨조인트 분석 (Conjoint-like Analysis Using Elimination-by-Aspects Model)

  • 박상준
    • 경영과학
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    • 제25권1호
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    • pp.139-147
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    • 2008
  • Conjoint Analysis is marketers' favorite methodology for finding out how buyers make trade-offs among competing products and suppliers. Thousands of applications of conjoint analysis have been carried out over the past three decades. The conjoint analysis has been so popular as a management decision tool due to the availability of a choice simulator. A conjoint simulator enables managers to perform 'what if' question accompanying the output of a conjoint study. Traditionally the First Choice Model (FCM) has been widely used as a choice simulator. The FCM is simple to do, easy to understand. In the FCM, the probability of an alternative is zero until its value is greater than others in the set. Once its value exceeds that threshold, however, it receives 100%. The LOGIT simulation model, which is also called as "Share of Preference", has been used commonly as an alternative of the FCM. In the model part worth utilities aren't required to be positive. Besides, it doesn't require part worth utilities computed under LOGIT model. The simulator can be used based on regression, monotone regression, linear programming, and so on. However, it is not free from the Independent from Irrelevant Alternatives (IIA) problem. This paper proposes the EBA (Elimination-By-Aspects) model as a useful conjoint-like method. One advantage of the EBA model is that it models choice in terms of the actual psychological processes that might be taking place. According to EBA, when choosing from choice objects, a person chooses one of the aspects that are effective for the objects and eliminates all objects which do not have this aspect. This process continues until only one alternative remains.

편측 성대마비와 성대폴립 환자의 수술 전후 음성검사와 이미지 화상분석의 상관관계에 대한 객관적 비교연구 (Comparative Study of Pre and Postoperative Voice and Image Analysis in Unilateral Vocal Cord Paralysis and Vocal Polyp)

  • 김시찬;정유삼;홍정표;오정석;최홍식
    • 대한후두음성언어의학회지
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    • 제11권1호
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    • pp.20-27
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    • 2000
  • To determine what is the change of pre and postoperative voice and image analysis parameters and correlations between them, videostroboscopy was analyzed in each 18 patients with unilateral vocal cord paralyses or vocal polyps before and after the surgery from November, 1996 to April, 1999. The correlation between acoustic and aerodynamic parameters was investigated. The software-Videolink and $\pi$-View(Mediface Co, Seoul, Korea)-was used in a quantitative analysis. In unilateral vocal cord paralysis, the glottic angle is well correlated with maximum phonation time, jitter and shimmer preoperatively. The postoperative glottic angle is also correlated with preoperative maximum phonation time. In patients with the vocal polyp, the chink is postoperatively decreased, but the size of the chink and the polyp is not correlated with pre and postoperative voice analysis parameters. These findings reveal that glottic an and vocal fold angle are good indicators of e postoperative glottic configuration in unilateral vocal cord paralysis. Vocal fold ratio is also a useful indicator that represents the length of vocal folds. We consider that the computerized analysis through videostroboscopy is one of objective diagnostic methods in many voice disorders if we can measure a distance between the telelaryngoscope and vocal folds.

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Dependence of Weibull parameters on the diameter and the internal defects of Tyranno ZMI fiber in the strength analysis

  • Morimoto, Tetsuya;Yamamoto, Koji;Ogihara, Shinji
    • Advanced Composite Materials
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    • 제16권3호
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    • pp.245-258
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    • 2007
  • The single-modal Weibull model has been assessed on Tyranno ZMI Si-Zr-C-O fiber if a set of shape and scale parameters accurately reproduced the effect of the size of the diameter on strength. The tensile data of a single fiber have been divided into two expedient groups as 'small diameter' group and 'large diameter' group in deriving the parameters, which should be consistent if the Weibull model accurately reproduced the size effect. However, the derived Weibull parameters were inconsistent between the two groups. Thereby the authors have concluded that the parameters of the single-modal Weibull model are dependent on the fiber diameter, so that the model is inadequate to reproduce the strength size effect. On the other hand, Weibull parameters were found consistent between the two groups by excluding the data of 'large mirror zone' sample, which was defined as the sample around 10% mirror zone area of the fracture surface. What is more, the exclusion reduced the strength variance more drastically in the 'large diameter' group than in the 'small diameter' group, even though the 'large mirror zone' samples were found identical in the percentage between the two groups. The authors therefore conclude that diameter limitation to the 'small diameter' group level can lead to drastically less distributed strength values than the estimated strength through the Weibull scaling on the present Tyranno ZMI Si-Zr-C-O fiber.

패션상품의 광고에 나타난 문화적 특성과 소구유형 (Cultural Characteristics and Product Appeals Reflected on Fashion Ads)

  • 전양진
    • 한국의류학회지
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    • 제26권8호
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    • pp.1196-1204
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    • 2002
  • This research was to see if the fashion product ads are standardized or differentiated, and to find what were the determinants if any differentiation existed. The purpose of this study was to identify cultural characteristics significant on marketing fashion produce. In addition, the relative importance of product appeals between rational and emotional in the fashion ads was examined. Hofstede's(l991) three cultural characteristics dimensions such as individualism-collectivism, power distance, masculinity-femininity were used. Content analysis was applied in the study. Magazine ads of apparel, cosmetics and accessories were collected from France, Japan, Korea and the US in 1999-2000. Cultural characteristics of the fashion ads were evaluated and compared in terms of country, product type and product involvement. Also ten consumption appeals were examined for county and product type. ANOVA, Duncan test and $X^2$ test were applied to analyze data. The results were shown as follows: First, all the cultural characteristics such as individualism-collectivism, power distance, and femininity-masculinity were different among countries. Second, two product appeals were significantly different among countries. Hedonic appeals were dominant fur France and the US while those were not for Korea and Japan. Third, product involvement level had significant impact on power distance characteristic and product appeals. Ads of high involvement fashion goods showed larger power distance and more emotional appeals. In conclusion, global fashion ads should be differentiated in terms of some cultural characteristics and product appeals.

Analysis of Sediment Reduction with VFS and Diversion Channel with Enhancements in SWAT Landuse-Subbasin Overland Flow and VFS Modules

  • Park, Youn-Shik;Kim, Jong-Gun;Kim, Nam-Won;Engel, Bernie;Lim, Kyoung-Jae
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2009년도 학술발표회 초록집
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    • pp.752-757
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    • 2009
  • In the last decade, many methods such as greet chamber, reservoir, or debris barrier, have been utilized to manage and prevent muddy water problem. The Vegetative Filter Strip (VFS) has been thought to be one of the most effective methods to trap sediment effectively. The VFS are usually installed at the edge of agricultural areas adjacent to stream or drainage ditches, and it has been shown that the VFS effectively removes pollutants transported with upland runoff. But, if the VFS is installed without any scientific analysis of rainfall-runoff characteristics, soil erosion, and sediment analysis, it may not reduce the sediment as much as expected. Although Soil and Water Assessment Tool (SWAT) model has been used worldwide for many hydrologic and Non-Point Source Pollution (NPSP) analysis at a watershed scale. but it has many limitations in simulating the VFS. Because it considers only 'filter strip width' when the model estimates sediment trapping efficiency, and does not consider the routing of sediment with overland flow option which is expected to maximize the sediment trapping efficiency from upper agricultural subbasin to lower spatially-explicit filter strip. Therefore, the SWAT overland flow option between landuse-subbasins with sediment routing capability was enhanced with modifications in SWAT watershed configuration and SWAT engine. The enhanced SWAT can simulate the sediment trapping efficiency of the VFS in the similar way as the desktop VFSMOD-w system does. Also it now can simulate the effects of overland flow from upper subbasin to reflect the increased runoff volume at the receiving subbasin, which is what is occurring at the field if no diversion channel is installed. In this study, the enhanced SWAT model was applied to small watershed located at Jaun-ri in South Korea to simulate diversion channel and spatially-explicit VFS. It was found that approximately sediment can be reduced by 31%, 65%, 68%, with diversion channel, the VFS, and the VFS with diversion channel, respectively.

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공공부조 수급자의 자살생각 영향요인 (Factors Affecting on Suicidal Ideation in Public Assistance Recipients)

  • 이주현;김민지;이병희;노진원
    • 한국콘텐츠학회논문지
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    • 제15권8호
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    • pp.366-374
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    • 2015
  • 본 연구는 공공부조를 지원받고 있는 대상자를 중심으로 자살생각에 영향을 미치는 요인이 무엇인지 살펴보았다. 이를 위하여 한국보건사회연구원과 서울대학교 사회복지연구소에서 조사한 한국복지패널(Korea Welfare Panel Study) 7차년도(2012년) 자료를 사용하였으며, 분석방법은 자살생각에 대한 영향의 정도를 파악하기 위해 이항 로짓모형을 이용한 회귀분석(binary logistic regression analysis)을 실시하였다. 분석 결과 중졸인 경우, 기혼인 경우, 자아존중감이 높을수록, 공공부조 만족도가 높을수록 자살생각을 할 가능성이 낮은 것으로 나타났다. 또한 우울이 있는 경우, 중년층인 경우 자살생각을 할 가능성이 높았다. 빈곤층에게 신체적, 심리적 요인만이 아닌 공공부조 만족도 역시 자살생각에 영향을 미칠 수 있다는 것을 증명하였다. 따라서 지원을 받는 대상자들의 만족도를 측정하는 것도 자살생각에 영향을 미치는 중요한 요인 중 하나일 수 있음을 시사한다.

환자안전사건 조사용 근본원인분석 소프트웨어의 비교 (Comparison of Root Cause Analysis Software for Investigating Patient Safety Incidents)

  • 최은영;이현정;옥민수;조민우;이상일
    • 한국의료질향상학회지
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    • 제23권1호
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    • pp.11-23
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    • 2017
  • Root Cause Analysis (RCA) has been widely used as a structured approach to investigate patient safety incidents. RCA helps identify what, how, and why something happened, therefore preventing recurrence of incidents. Since many quality tools can be used during RCA, various formats of RCA exist. If RCAs are performed incorrectly or incompletely, they are likely to produce unusable results. To address this issue, RCA software has been developed. The use of RCA software in investigating patient safety incidents may offer several advantages, such as potential reduction in learning time, shortening of the analytic process, facilitation of collection, analysis, and presentation of data and production of meaningful RCA reports. We introduced six healthcare RCA software and compared characteristics. Results from this study will enable the RCA team to choose proper RCA software.

외식산업에서 프랜차이징을 통한 선발자 우위에 관한 연구 (First Mover Advantage Based on Franchising in the Foodservice Industry)

  • 정대용;엄태영
    • 동아시아식생활학회지
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    • 제20권1호
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    • pp.166-174
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    • 2010
  • It is widely accepted that there are first mover advantages in various existing industries. However, few studies have been conducted to evaluate the first mover advantages shown in the foodservice industry, whether first movers practically have first mover advantages, and what effects these advantages have on foodservice enterprises. Specifically this study was designed to identify the relationship between first mover advantages and business performance in the foodservice industry. To accomplish this, questionnaires were sent to and collected from selected first movers consisting of 70 foodservice franchised enterprises. SPSS 15.0 was then employed to conduct factor analysis, reliability analysis, correlation analysis, and regression analysis. The analyses revealed that the franchised foodservice enterprises could provide several strategies that enabled them to grow quickly and to establish more shops in their market. In addition, having a greater number of shops resulted in greater advantages when compared to their competitors. Moreover, the advantages of first movers had a significant effect on their business performance. Taken together, these findings imply that if foodservice enterprises franchise their business as early as possible, they can more easily preoccupy their market and enjoy more first mover advantages. This study is meaningful and differentiated from existing studies in that it investigated first mover advantages of the foodservice enterprises in the appropriate industry.