• 제목/요약/키워드: Literature search

검색결과 1,491건 처리시간 0.026초

추계학적 최적화방법에 의한 기존관수로시스템의 병열관로 확장 (Stochastic Optimization Approach for Parallel Expansion of the Existing Water Distribution Systems)

  • 안태진;최계운;박정응
    • 물과 미래
    • /
    • 제28권2호
    • /
    • pp.169-180
    • /
    • 1995
  • 관망상배관(Looped networks)시스템에서 관수로시스템의 전체비용은 폐회로유량(Loop flows)에 따라 영향을 받는다. 따라서 관망상배관의 최적설계를 위한 수학적모형을 추계학적 최적화방법에 적용하기 위하여 폐회로유량의 섭동(Perturbations)으로 전체비용이 변하게 하였다. 관망상 배관문제의 분석가능영역은 수많은 국지해(Local optimum)를 갖는 비볼록(Nonconvex)이므로 분석가능영역의 효율적인 심사를 위하여 수정추계학적 심사방법을 제안하였으며 이 방법은 국부심사단계(Global search phase)와 국지심사단계(Local search phase)로 구성되어 있다. 국부탐사에서는 점차적으로 국지해를 증진시키며 국지탐사에서는 국부탐사단계에서 교착상태에 있는 국지해로 부터 벗어나게 하거나 최종국지해를 증진시킨다. 제안한 방법의 효율성을 검정하기 위하여 참고문헌에 있는 기존관수로시스템의 병열관로(Parallel pipe line) 확장문제를 표본으로 채택하여 제안한 방법을 적용한 결과 먼저 발표된 연구자들의 비용보다 적은 비용으로 설계할 수 있었다.

  • PDF

PubMine: An Ontology-Based Text Mining System for Deducing Relationships among Biological Entities

  • Kim, Tae-Kyung;Oh, Jeong-Su;Ko, Gun-Hwan;Cho, Wan-Sup;Hou, Bo-Kyeng;Lee, Sang-Hyuk
    • Interdisciplinary Bio Central
    • /
    • 제3권2호
    • /
    • pp.7.1-7.6
    • /
    • 2011
  • Background: Published manuscripts are the main source of biological knowledge. Since the manual examination is almost impossible due to the huge volume of literature data (approximately 19 million abstracts in PubMed), intelligent text mining systems are of great utility for knowledge discovery. However, most of current text mining tools have limited applicability because of i) providing abstract-based search rather than sentence-based search, ii) improper use or lack of ontology terms, iii) the design to be used for specific subjects, or iv) slow response time that hampers web services and real time applications. Results: We introduce an advanced text mining system called PubMine that supports intelligent knowledge discovery based on diverse bio-ontologies. PubMine improves query accuracy and flexibility with advanced search capabilities of fuzzy search, wildcard search, proximity search, range search, and the Boolean combinations. Furthermore, PubMine allows users to extract multi-dimensional relationships between genes, diseases, and chemical compounds by using OLAP (On-Line Analytical Processing) techniques. The HUGO gene symbols and the MeSH ontology for diseases, chemical compounds, and anatomy have been included in the current version of PubMine, which is freely available at http://pubmine.kobic.re.kr. Conclusions: PubMine is a unique bio-text mining system that provides flexible searches and analysis of biological entity relationships. We believe that PubMine would serve as a key bioinformatics utility due to its rapid response to enable web services for community and to the flexibility to accommodate general ontology.

Guidelines on the Operation Phases of Manual Material Handling Tasks Through Literature Reviews

  • Lee, Kyung-Sun;Jung, Myung-Chul
    • 대한인간공학회지
    • /
    • 제36권4호
    • /
    • pp.325-341
    • /
    • 2017
  • Objective: The purpose of this study is to suggest the guidelines of operation phases to minimize injuries and musculoskeletal disorders in manual material handling (MMH) tasks through literature reviews. The guidelines are presented as the preparing phase, lifting phase, carrying phase, and lowering phase. Also, we summarized the non-numerical general guidelines for MMH tasks. Background: Manual material handling is still a main cause to musculoskeletal disorders. Method: Procedures of a literature review are classified into database selection, keyword search, title review, abstract review related to literature selection, guideline review and arrangement. A total 48 papers and books were analyzed in detail by title and abstract reviews. Results: In the preparing phase, we suggested the basic conditions in MMH, preparing procedure, clothing and protective equipment, and education. In the lifting and carrying phases, we recommended maximal acceptable weight by frequency and body posture. In the lowering phase, we suggested the lowest weight and safety body postures. Finally, we recommended general guidelines and guideline items for MMH. General guidelines are presented to suggest worker selection, technical education, and work design parts. Conclusion: We suggested the guidelines on the four operation phases of MMH tasks such as preparing, lifting, carrying, and lowering phases. Application: The findings of this study can be utilized as guidelines for proactive recommendations according to workers in MMH tasks.

Impact of Premarital Coaching (PMC) Intervention using the Psycho-educational Approach on Parenting Self-efficacy of Newly-married Underage Couples: A Narrative Literature Review of Evidence and Feasibility in Indonesia

  • Sutrimo, Ade
    • Perspectives in Nursing Science
    • /
    • 제15권1호
    • /
    • pp.41-48
    • /
    • 2018
  • Purpose: The purpose of this study was to identify the latest evidence for interventions involving adolescent newlyweds, and the feasibility of premarital coaching (PMC). Methods: A narrative literature review design carried out through related studies was used for the present literature review. A diverse search from several databases was performed to create a critical appraisal and to develop a more integrated model for the PMC program. Studies that empirical, written in English, peer-reviewed, and published during 2008~2017 were included. Results: Six articles were selected for the review. The principal findings identified three major themes including underage period as a high-risk for marriage, development tasks of the newly married spouse, parenting self-efficacy and the psycho-educational approach of PMC to enhance parenting knowledge, skills, and readiness. Conclusion: It was found that content of PMC as the preparation of underage married couples were formulated based on coaching technic, various spouse and parenting educations, and adjusted based on couples's preferences. Rigorous studies with measurement of long-term retentions are needed.

한의학 고전 문헌 데이터베이스에서 활용할 건망 유의어 연구 (Creating Amnesia Synonyms in Traditional Korean Medicine : Database Utilization)

  • 김우영;권오민
    • 한국의사학회지
    • /
    • 제25권1호
    • /
    • pp.5-10
    • /
    • 2012
  • The aim of this study is to create a catalogue of amnesia synonyms in Traditional Korean Medicine for database utilization. A two-staged literature search was carried out. First, two databases(China National Knowledge Infrastructure:CNKI, Oriental Medicine Advanced Searching Integrated System:OASIS) were searched for eligible articles, and a set of candidate words was identified from the articles. Second, the candidate words were searched in 30 medical classics to check the frequency of use. As a result, 9 candidate words including 喜忘(huimang), 善忘(seonmang), 多忘(damang), 好忘(homang), 健忘(geonmang), 遂忘(sumang), 遺忘(yumang), 忘事(mangsa), and 易忘(imang) were identified from the 10 eligible articles. Among the 9 candidate words, 健忘(geonmang) was a descriptor and 7 other words including 喜忘(huimang), 善忘(seonmang), 多忘(damang), 好忘(homang), 遂忘(sumang), 遺忘(yumang), 忘事(mangsa) were non-descriptors. 易忘(imang) was not an adequate synonym for amnesia.

문화, 회상 그리고 문학: 문화학과 문예학의 학제적 연관성에 관한 모색″ (Culture, Memory, and Literature: In Search of an Interdisciplinary Relationship Between Cultural and Literary Studies)

  • 최문규
    • 인문언어
    • /
    • 제1권2호
    • /
    • pp.67-90
    • /
    • 2001
  • In the past few years, a trend has emerged emphasizing the interdisciplinary relationship between cultural and literary studies, and "memory" has been suggested as the central theme in this trend. According to Aleida and Jan Assmann, "memory" as collective memory (not individual recollection) has various functions and forms, of which communicative memory and cultural memory occupy opposite poles of a central axis. Whereas communicative memory relates to the living past shared among contemporaries, cultural memory relates to "recollected history" rather than factual history. Cultural memory finds transmission through symbolic media such as myths, festivities, and literary works. Literary works preserve critical and living memories as opposed to forgotten memories. In other words, literature should be better read as "criticism and memory" than "imitation and preservation." Works of literature are characterized by a turning away from repetition toward representation-the process of "making present" of what is past.

  • PDF

鼻茸(Nasal Polyp)에 對한 文獻的 考察 (A Literature study on the Nasal Polyps)

  • 김현아
    • 한방안이비인후피부과학회지
    • /
    • 제12권1호
    • /
    • pp.338-355
    • /
    • 1999
  • In the treatment of Nasal Polyps. which are produced with allergic rhinitis, chronic paranasal sinusitis at clinic. Herb-med., acupuncture and some medicine for external application have been used. The symptoms, however, has taken a turn for the better in temporary, the nasal polyps was not removed in completely. So the origin treatment was impossible by the use of herb-med.. acupuncture and medicine. Although a surgical operation (excision) of western-medicine is effective for a specified period of time (about 6 months), the nasal polyps tend to recur. Because of that the second and third operation might be needed, so we cannot consider the operation as the treatment of nasal polyps. The study was observed to investigate the nasal polyps treatment, and to search practical attempt for the clinic application through a literature study on Bisikyuk and Bithch which are similar with nasal polyps. As results, the practical application of external treatment for the nasal polyps treatment in clinic might be more necessary, and internal use of the Herb-med. with the external treatment might be treated as supplementary treatment.

  • PDF

안전리더십 연구에 대한 체계적 문헌고찰 (A Systematic Literature Review of Research Tends in Safety Leadership)

  • 서현정;홍아정
    • 한국안전학회지
    • /
    • 제35권6호
    • /
    • pp.61-77
    • /
    • 2020
  • In order to establish a conceptual basis and future research direction of safety leadership, this study reviewed domestic and foreign research trends related to safety leadership through systematic literature review methods. The literature search was conducted by combining terms related to safety leadership without limiting the period databases. A total of 195 documents were found, of which the final 59 were used for analysis. As a results, the safety leadership study was the most frequent in relations among variables. The most leadership types were based on transactional leadership and transformational leadership. In addition, studies have been conducted to categorize safety leadership as an independent concept. Safety leadership was mainly studied in the fields of safety engineering, disaster prevention, and business administration. Quantitative studies were mainly conducted to research methods. Based on the results, the research trend related to safety leadership was discussed, and suggestions for future research direction was presented.

소방공무원 자살생각에 대한 체계적 문헌고찰 (Suicidal ideation among firefighters: A systematic literature review)

  • 강웅일;정은경
    • 한국응급구조학회지
    • /
    • 제27권1호
    • /
    • pp.7-18
    • /
    • 2023
  • Purpose: This study conducted a systematic literature review to analyze the factors related to suicidal ideation among firefighters. Methods: A systematic literature review was conducted to identify factors influencing suicidal ideation among firefighters, using Korean academic information search services from January to June 2022. A total of 238 articles were searched using keywords such as "firefighter," "depression," "post-traumatic stress disorder (PTSD)," "cognitive emotion regulation," "suicide," and "suicidal ideation." Among them, nine articles were selected for analysis using descriptive correlation studies. Results: It was found that the relationship between firefighter stress (PTSD) and suicidal thoughts was mediated by depression. Even if the stress level (PTSD) was high, suicidal thoughts decreased when the emotional coping level was high. Conclusion: To prevent firefighters from committing suicide, intervention programs with effective approaches to quickly identify high at-risk people and improve their emotional coping skills, should be implemented.

The Balancing Act of Action and Learning: A Systematic Review of the Action Learning Literature

  • CHO, Yonjoo
    • Educational Technology International
    • /
    • 제9권1호
    • /
    • pp.1-23
    • /
    • 2008
  • Despite considerable commitment to the application of action learning as an organization development intervention, no identified systematic investigation of action learning practices has been reported. Based on a systematic literature review, the purpose of this paper is to identify whether researchers strike a balance between action and learning in their studies of action learning. Research findings in this study included: (1) only 32 empirical studies were found from the electronic database search; (2) based on the hypothesized continuum of Revans' original proposition of balancing action and learning, the author categorized 32 studies into three groups: action-oriented, learning-oriented, and balanced action learning; (3) there were only nine studies on balanced action learning among 32 empirical studies, whose insights included an effective use of project teams, applications of action learning for organization development, and key success factors such as time, reflection, and management support; (4) case study was among the most frequently used research method and only six quality studies met key methodological traits; and (5) therefore, more rigorous empirical research employing quantitative methods as well as case studies is needed to determine whether researchers strike a balance between action and learning in studies on action learning.