• Journal of Hospice and Palliative Care
• /
• 제27권3호
• /
• pp.87-98
• /
• 2024

Purpose: This study aimed to investigate advance care planning needs expressed online. Methods: This study collected data from online community posts and healthcare news sites. The search keywords included "death," "euthanasia," "life-sustaining medical care," "life-sustaining treatment," "advance directives," "advance medical directives," and "advance care planning." Data collection spanned from February 2018 to February 14, 2020. Out of 2,288 posts, 1,190 were included in the final analysis. Data analysis was conducted using NVivo 12, a qualitative data analysis software program. Results: Content analysis categorized patients' advance care planning needs into eight themes, 11 theme clusters, and 33 meaningful statements. Similarly, care providers' advance care planning needs were categorized into eight themes, 14 theme clusters, and 42 meaningful statements. The identified themes of care needs included life-sustaining medical care, decision-making related to life-sustaining medical care, physical care, environmental care, supportive and spiritual care, respect, preparing for death, and family. Conclusion: This study identified care needs from the perspectives of patients and their families. The findings may serve as preliminary data for future research and clinical applications.

• Geomechanics and Engineering
• /
• 제36권1호
• /
• pp.83-97
• /
• 2024

It is important to make reasonable prediction about the long-term deformation of high rockfill geostructures. However, the deformation is usually underestimated using the rockfill parameters obtained from laboratory tests due to different size effects, which make it necessary to identify parameters from in-situ monitoring data. This paper proposes a novel hybrid back-analysis method with a modified objective function defined for the time-dependent back-analysis problem. The method consists of two stages. In the first stage, an improved weighted average method is proposed to quickly narrow the search region; while in the second stage, an adaptive response surface method is proposed to iteratively search for the satisfactory solution, with a technique that can adaptively consider the translation, contraction or expansion of the exploration region. The accuracy and computational efficiency of the proposed hybrid back-analysis method is demonstrated by back-analyzing the long-term deformation of two high embankments constructed for airport runways, with the rockfills being modeled by a rheological model considering the influence of stress states on the creep behavior.

• 정보처리학회논문지:소프트웨어 및 데이터공학
• /
• 제3권6호
• /
• pp.215-218
• /
• 2014

해슁(hashing)을 기반으로 한 근사 최근접 이웃 탐색(approximate nearest neighbors search, ANN search) 방법에서는 데이터 샘플들을 k-비트 이진 코드로 변환하는 해쉬 함수들을 이용함으로써 근접 이웃 탐색이 이진변환 공간에서 이루어지게 된다. 본 논문에서는 PCA 기반 군집화 방법인 Principal Direction Divisive Partitioning(PDDP)를 이용한 해슁 방법을 제안한다. PDDP는 가장 큰 분산을 가지는 클러스터를 선택하여 그 클러스터의 첫 번째 주성분 방향을 이용하여 두 개의 클러스터로 분할하는 과정을 반복적으로 시행하는 군집화 방법이다. 제안하는 해슁 방법에서는 PDDP에서 분할을 위해 사용하는 주성분방향을 바이너리 코딩을 위한 사영벡터로서 사용한다. 실험결과는 제안하는 방법이 다른 해슁 방법들과 비교하여 경쟁력 있는 방법임을 입증한다.

• 대한가정학회지
• /
• 제35권1호
• /
• pp.357-372
• /
• 1997

The purpose of this study was to 1) segment female adolescent consumers into consumer groups displaying different consumer decision-making styles 2) to determine the consumer characteristics(clothing involvement information search store patronage and demographic variables) that related to each consumer segment and 3) to identify the interrelationship between the consumer characteristics. Decision-making styles were measured by 32 seven-point Likert type scales adapted from Sproles & Kendall and Shim & Kot A total of 78 statements dealing with three aspects of consumer characteristics was adapted from previous research. Data were collected from 567 2nd grade female middle and high school students in Seoul via self-administered questionnaires. and were analysed by frequency factor analysis ANOVA cluster analysis χ2 -test and Duncan's multiple range test. The results of this study were as follows: As a results of cluster analysis and ANOVA on seven factors of desion-making styles(1. brand-consiousness 2. novelty/fashion-consciousness 3. recreational/hedonis-tic orientation, 4. impulsive/carelessness, 5. price-consciousness/value-for-money, 6. perfectionism/high quality orientation 7. habitual/brand-royal consciousness) three consumer groups were identified and labeled as puality-oriented/non-utlitarian shoppers price-oriented shoppers and apathetic shoppers. Quality-oriented/non-utilitarian shoppers showed the highest clothing involvement scores of all aspects the highest consumer knowledge/experience most active ongoing information search and prepurchase information search. They preferred department store and franchise store for apparel shopping and considered service/reliability atmosphere variety of goods as important store attributes, Price-oriented shoppers showed prepurchase information search and planned purchase behavior actively. They preferred factory outlet store specialty stre and considered price very important as store attributes. Apathetic shoppers showed the lowest scores of all aspects of clothing involvement and most passive behavior in information search activities except showing the highest planned purchase. They preferred regional markets.

• 산업공학
• /
• 제10권2호
• /
• pp.79-90
• /
• 1997

Documents in a traditional PDM(Product Data Management) system have been managed in a form of scanned document files or electronic documents developed by specific tools. Though each tool manages documents with its own systematical methods, it has drawbacks in data search, data integration and interchange, etc. For this reason, in this research we propose an efficient document management system for PDM by using the SGML(Standard Generalized Markup Language), one of CALS and ISO standards for document interchanges. Among documents to be managed in PDM, the engineering change notification (ECN) is taken into account. The DTD (Document Type Definition) has been constucted based on the logical analysis of the documents format, In addition, based on the DTD, DB classes have been designed by object-oriented paradigms and a prototype for document input/output and search has been developed using UniSQL ORDBMS (Object-Relational DBMS) and PowerBuilder under the client/server environment.

• 한국공간구조학회논문집
• /
• 제20권1호
• /
• pp.95-102
• /
• 2020

The structural design of arch roofs or bridges requires the analysis of their unstable behaviors depending on certain parameters defined in the arch shape. Their maintenance should estimate the parameters from observed data. However, since the critical parameters exist in the equilibrium paths of the arch, and a small change in such the parameters causes a significant change in their behaviors. Thus, estimation to find the critical ones should be carried out using a global search algorithm. In this paper we study the parameter estimation for a shallow arch by a quantum-inspired evolution algorithm. A cost functional to estimate the system parameters included in the arch consists of the difference between the observed signal and the estimated signal of the arch system. The design variables are shape, external load and damping constant in the arch system. We provide theoretical and numerical examples for estimation of the parameters from both contaminated data and pure data.

• 디지털융복합연구
• /
• 제19권2호
• /
• pp.231-238
• /
• 2021

SNS는 데이터를 통해 사용자의 생각이나 행동을 파악할 수 있고 검색포털의 트렌드는 사용자들의 관심사와 그 변화를 파악할 수 있는 대표적인 서비스이다. 본 논문에서는 SNS의 트윗과 검색포털 트렌드에 마약류관련 단어 노출정도와 마약류 사건 통계와의 비교분석을 수행하여 관계를 분석하였다. SNS와 검색 포털 트렌드의 추이가 일정한 시차를 두고 검찰청 통계에도 동일하게 나타난 것을 확인할 수 있었다. 또한 마약류관련 단어들이 언급된 트윗들에 대한 의미를 파악하기 위해 군집분석을 수행하였다. 2020년 10월에 수집된 5만건 트윗에서는 실제 마약류의 판매에 관련된 의미를 찾을 수 있었다. 이를 통해 SNS모니터링만으로도 마약류관련 사건에 대한 모니터링이 가능하고 구체적 판매 또는 구매관련한 정보를 찾을 수 있고 수사과정에 활용할 수 있다. 추후에는 텍스트뿐 아니라 이미지로 나타나는 관련 범죄사항을 파악할 수 있고 범죄모니터링 및 예측시스템을 제안할 수 있다.

• 한국의류학회지
• /
• 제32권11호
• /
• pp.1814-1824
• /
• 2008

The purpose of this study was to investigate the information search behavior in functional sportswear purchasing by clothing and sports concern variables. Functional sportswear means sportswear made of functional clothing materials. The information search behavior in this study included information sources, information seeking attributes, information search differences between when consumers buy functional sportswear and when they purchase nonfunctional sportswear, and information characteristics. For this purpose, 500 questionnaires had been distributed to university students and 409 of which were used in the study. For data analysis, frequency, reliability analysis, factor analysis, and t-test were used. The results were as follows: first, the friends showed to be the most effective information source of functional clothing materials sportswear and internet revealed to be the information source that made the most frequent use of. The experts appeared to be the most reliable information source. Second, the more the students were concerned about clothing and sports, the more important they considered information seeking attributes. Third, in the aspects of information search differences between when consumers bought functional sportswear and when they purchased nonfunctional sportswear, only sports concern variables showed to be significant. The last, regardless of clothing and sports concern variables, it was found that customers considered all the information characteristics important.

• 한국항해항만학회지
• /
• 제47권6호
• /
• pp.331-340
• /
• 2023

해양수색구조에서 조난자의 생존시간 예측은 중요한 관심사 중 하나이다. 해양선진국에서 생존모델에 관한 연구가 많이 있었지만 영국, 미국, 캐나다 사고 데이터를 이용해 개발되었기 때문에 우리나라 해역에서 한국인 체형에 그대로 적용하는 데에 어려움이 따른다. 이러한 문제점을 해결하기 위해 해양경찰 해상수색구조사례, 언론보도자료, 기상청 자료, 해양경찰 해양특수구조단 전문가 면담 및 설문조사를 통해 익수자 생존시간에 관한 자료를 수집하였다. 이 자료를 이용해 추세분석 및 회귀분석을 수행하여 익수자 최대 생존시간(한국형) 산정 식을 개발하였다. 이 산식과 해외 생존모델과 비교하여 우리나라 해양조난사고에 적용가능성을 검토하였다. 최대 생존시간(한국형), 국내 해양수색구조 익수자 구조 사례, 해외 생존모델을 종합적으로 활용하여 조난자 생존시간과 집중·추천 수색시간 지침을 제언하였다. 이를 통해 수색자원의 투입 등 의사결정에 기여할 수 있을 것으로 판단된다. 추가로 해양수색구조의 종료·축소를 결정하고 조난자 가족 및 국민 대상으로 정책결정 내용을 설명하는데 도움이 될 수 있다.

• 한국생물정보학회:학술대회논문집
• /
• 한국생물정보시스템생물학회 2001년도 제2회 생물정보 워크샵 (DNA Chip Bioinformatics)
• /
• pp.97-115
• /
• 2001

cDNA microarray technology allows the monitoring of expression levels for thousands of genes simultaneously. Many statistical analysis tools become widely applicable to the analysis of cDNA microarray data. In this talk, we consider a two-way ANOVA model to differentiate genes that have high variability and ones that do not. Using this model, we detect genes that have different gene expression profiles among experimental groups. The two-way ANOVA model is illustrated using cDNA microarrays of 3,800 genes obtained in an experiment to search for changes in gene expression profiles during neuronal differentiation of cortical stem cells.