• Title/Summary/Keyword: index of difficulty

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VBioindex: A Visual Tool to Estimate Biodiversity

  • Yu, Dong Su;Yoo, Seung Hwa
    • Genomics & Informatics
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    • v.13 no.3
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    • pp.90-92
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    • 2015
  • Biological diversity, also known as biodiversity, is an important criterion for measuring the value of an ecosystem. As biodiversity is closely related to human welfare and quality of life, many efforts to restore and maintain the biodiversity of species have been made by government agencies and non-governmental organizations, thereby drawing a substantial amount of international attention. In the fields of biological research, biodiversity is widely measured using traditional statistical indices such as the Shannon-Wiener index, species richness, evenness, and relative dominance of species. However, some biologists and ecologists have difficulty using these indices because they require advanced mathematical knowledge and computational techniques. Therefore, we developed VBioindex, a user-friendly program that is capable of measuring the Shannon-Wiener index, species richness, evenness, and relative dominance. VBioindex serves as an easy to use interface and visually represents the results in the form of a simple chart and in addition, VBioindex offers functions for long-term investigations of datasets using time-series analyses.

Transient Stability Analysis Using Fractal Behaviours (프랙탑 현상을 이용한 과도 안정도 해석)

  • Choi, Jong-Yun;Ahn, Hyun-Sik;Kim, Jin-O
    • Proceedings of the KIEE Conference
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    • 1997.07c
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    • pp.1103-1105
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    • 1997
  • Transient stability analysis is concerned with a power system's response to unwanted disturbance. Recently, direct method which utilize the stable region of stable equilibrium point is used to analyze transient stability This paper focuses on the controlling UEP method using the fractal behaviours. In the controlling UEP method, many algorithms are used to find controlling UEP However, the existence of fractal region gives difficulty in finding the controlling UEP. So, this paper observes the fractal feature arid introduce the fractal index to explain how much the fractal region occupies in the entire space. Using an improved algorithm from the view point of fractal index, we are going to find the controlling UEP.

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Feasibility Study of Aviation Safety Data Analysis for Airworthiness Management System Improvement (항공안전 데이터 분석 기반 항공기 감항관리체계 개선 방안 연구)

  • Jeong, Hyun-Jin;Kim, Seung-Kak;Kim, Yong;Sim, Yeong-Min
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.25 no.2
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    • pp.25-38
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    • 2017
  • Current limitation of Aviation airworthiness manage system and text based Aviation safety report data, lack of Data Manage system for aviation parts failure and lack of continuing airworthiness related to task linking system for Inspection/Report/Improvement(AD ; Airworthiness Directive) have been apprehended to suggest direction of realizing improved operating system by applying aviation airworthiness manage system by using standardization and safety performance index based managing and safety performance index based data analyzing.

Research of Adaptive Transformation Method Based on Webpage Semantic Features for Small-Screen Terminals

  • Li, Hao;Liu, Qingtang;Hu, Min;Zhu, Xiaoliang
    • ETRI Journal
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    • v.35 no.5
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    • pp.900-910
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    • 2013
  • Small-screen mobile terminals have difficulty accessing existing Web resources designed for large-screen devices. This paper presents an adaptive transformation method based on webpage semantic features to solve this problem. According to the text density and link density features of the webpages, the webpages are divided into two types: index and content. Our method uses an index-based webpage transformation algorithm and a content-based webpage transformation algorithm. Experiment results demonstrate that our adaptive transformation method is not dependent on specific software and webpage templates, and it is capable of enhancing Web content adaptation on small-screen terminals.

A study on oral health state of immigrant workers with DMFT-index (외국인 이주 노동자의 구강건강관리 실태 및 우식경험영구치지수)

  • Kim, Ju-Yeong;Jung, Myung-Hee
    • Journal of Korean society of Dental Hygiene
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    • v.7 no.2
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    • pp.123-133
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    • 2007
  • This document is about immigrant worker who use counseling office for human rights in the Daegu Gumin Church. We researched their oral health state so that we can understand their situation and support them properly. General characteristics of study subjects, habits related to oral health, the oral examination and treatment clinic, participated in oral heath education program were studied by designed administered questionaire. And decay, filling(treatment teeth), missing tooth(lost teeth by dental-caries)was counted by oral examination, and calculated DMFT-index. This study was done from the July, 9, 2006 to Aug. 8, 2006. In a total of 289 immigrant worker, 77.9% of them were men and 22.1% of them were women. 55.7% of their salary was from 1,000,000 won to 1,500,000 won and most of them were working for a fiber industry. Many of them are living in korea for more then three years. DMFT index for men was 2.77 and for women was 4.06 so average of DMFT index was 3.06. 46.7% of them said that they are healthy in oral health state. The question for having difficulty using dental clinic in korea, 65.1% of them said "it is difficult". First reason was a communication problem and second was time. Most of them didn't have a oral health education but 85.1% of them said that they are looking forward to attending oral health education. Immigrant worker had better DMFT index then that of korean blue color worker. But still it is quite difficult for them using dental clinic in korea also cost. It is necessary to support them properly that medical insurance system, medical facilities of quality, medical insurance subscriber beside, made by their language, manual for them. At once, medical service improvement a policy is necessary for immigrant worker in korea.

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The Prevalence of constipation and Dietary Fiber Intake of 3rd Grade High Shool Girls (일반계 고3여학생의 배변 실태와 식이섬유 섭취에 관한 연구)

  • 나현주
    • Journal of Nutrition and Health
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    • v.33 no.6
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    • pp.675-683
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    • 2000
  • The purpose of this study was to find out the prevalence of constipation nutrition knowledge on dietary fiber and frequency of dietary fiber foods intake of 3rd grade high school girls in Kangnung and Seoul. The total 412 questionnaires were analyzed. Defecation frequency was irregular in 47.6% of the students 21.6% had less than twice a week. Those who were in a hurry during defecation frequency was irregular in 47.6% of the students 21.6% had less than twice a week. Those who were in a hurry during defecation were 57.9% and those spent more than 10 min. for defecation were 21.8% More than half of the students(56.6%) answered to have constipation and 13.8% had taken laxative pills more than once during the last one month period. The nutrition knowledge score was relatively high 7.63 points out of possible 10. Dietary fiber intake scores measured by food frequency questionnaire were 3.78 for fruits 3.71 points out of possible 10. Dietary fiber food intake scores measured by food frequency questionnaire were 3.78 for fruits 3.71 for vegetables and 3.37 for seaweeds meaning taken once a week to 2-3 times per month. For the diagnosis of defecation difficulty a factor called "constipation index" was introduced which was composed of defecation frequency time spending for defecation easiness in defecation and feeling of residue in the intestine after defecation. The Cronbach a coefficient of constipation index was 71. Constipation index was significantly correlated with stress level(p<0.05) haste during defecation(p<.01) and defecation time(p<.01) The higher the stress level the more hurry during defecation and the later the defecation the higher the constipation index. The students who ate more often vegetables and seaweeds had lower constipation index(p<.05, p<.01)05, p<.01)

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Analysis of th Factors related to the Happiness Index of Dental Hygienists on Convergence Study (치과위생사의 행복지수에 영향을 미치는 요인에 관한 융합연구)

  • Oh, Han Na;Kim, Ji Hyun
    • Journal of the Korea Convergence Society
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    • v.9 no.12
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    • pp.75-80
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    • 2018
  • This study was conducted to provide basic data on the dental hygienists Happiness Index and identify factors influencing dental hygienists A self-administered questionnaire survey was conducted dental hygienists in Jeollabuk-do(Jeonju, Iksan, Gunsan) from October to November 2017. Data were analyzed using t-test, ANOVA and multiple regression. As the result of study, Happiness Index of socioeconomic level has increased when the more work career, and more monthly wage, and better interpersonal relationship. Happiness Index of psychological well-being has increased when younger group and more monthly wage, and better interpersonal relationship. Therefore, in order to increase the happiness index of dental hygienists, economic compensation such as incentives and if the education of the communication method of the cases where the most difficulty case of the communication situation in the human relationship is confirmed is preceded, the quality of the medical service provided to the patient due to the happy working life will be improved.

A Comparison of Three Low Back Disability Questionnaires With Rasch Analysis (라쉬분석을 이용한 세 가지 요통 장애 설문지의 비교)

  • Kim, Gyoung-Mo;Park, So-Yeon;Yi, Chung-Hwi
    • Physical Therapy Korea
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    • v.18 no.3
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    • pp.94-102
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    • 2011
  • The purpose of this study was to review existing assessment tools for patients with low back pain and improve them through combination. A total of 314 patients with low back pain participated. Their condition was assessed using the Oswestry Disability Questionnaire (ODQ), the Quebec Back Pain Disability Scale (QBPD), and the Back Pain Functional Scale (BPFS). Rasch analysis was applied to identify inappropriate items, item difficulties, and the separation index. In this study, the 'sex life' item of the ODQ (10 items) and the 'sleeping' item of the BPFS (12 items) showed misfit statistics, whereas all items of the QBPD (20 items) were appropriate. After combining the ODQ, QBPD and BPFS, Rasch analysis was applied. The 'pain intensity', and the 'sex life' item of the ODQ and the 'throw a ball' item of QBPD showed misfit statistics. These 3 items were retained for further analysis. The remaining 42 combined ODQ-QBPD-BPFS items were arranged according to difficulty. For all subjects, the most difficult item was 'pain intensity', whereas the easiest was 'take food out of the refrigerator'. As the separation index of 42 combined ODQ-QBPD-BPFS was higher than that of the three questionnaires separately, difficulty of items varied with some need for rearrangement. The results of this study confirmed the possibility and need for a new back pain disability assessment tool, and produced one. Further study is needed to refine the questionnaire in consideration of psychosocial and occupational factors.

The Development of An Instrument for Evaluating Inquiry Activity in Science Curricula (과학 탐구 평가표의 개발)

  • Hur, Myung
    • Journal of The Korean Association For Science Education
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    • v.4 no.2
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    • pp.57-63
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    • 1984
  • An inquiry approach in teaching science has been advocated by many science educators for the past few decades, and most elementary and secondary science curricula have incorporated it in varying degrees. It has been proven in recent studies, however, that there exists considerable discrepancy between the expectation of outcomes of the inquiry approach and the actuality. This in part implies that there is a somewhat urgent need for the systematic evaluation of the approach in teaching science. The purpose of this study is to develop a comprehensive instrument for evaluating inquiry teaching approaches embedded in science curricular materials. To develop a more valid and reliable instrument a set of empirical data was used in the developmental procedure, and most of the previous studies regarding inquiry teaching method and inquiry evaluation were consulted. The inquiry evaluation method developed in this study, called the Scientific Inquiry Evaluation Inventory (SIEI), is composed of three parts: (1) analyzing and coding each science process task of inquiry activity; (2) evaluating each inquiry activity as a whole; and (3) evaluating each science laboratory curriculum as a whole. The first part of the instrument consists of twenty science process categories and thirty subcategories grouped into four sections: (1) gathering and organizing data; (2) interpreting and analyzing data; (3) synthesizing results and evaluation; and (4) hypothesizing and designing an experiment. The science process categories are arranged according to the level of difficulty, psychological level of thinking, degree of creativity demand, and the model of the process of scientific inquiry, which is also developed in the study. The second part of the instrument contains four evaluation scales of inquiry activity: (1) competition/cooperation scale; (2) discussion scale; (3) openness scale; and (4) inquiry scope scale. And the last part consists of three methods for evaluating a science laboratory curriculum as a whole: (1) inquiry pyramid; (2) inquiry index; and (3) difficulty index. The instrument is designed to be used by teachers, science curriculum developers and science education evaluators for the purpose of diagnosing the nature and appropriateness of scientific inquiry introduced in secondary science curricular materials, especailly in laboratory work and field work.

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A report on the clinical efficacy of Daejo-hwan(DJH) about the dryness of vagina and sexual satisfaction in climacteric women (갱년기 여성의 질 건조증과 성만족도에 미치는 대조환(大造丸)의 임상효과 보고)

  • Kim, Eui-Il;Sin, Yong-Wan;Yoo, Dong-Youl;Lee, Jung-Eun
    • The Journal of Korean Obstetrics and Gynecology
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    • v.18 no.3
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    • pp.203-214
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    • 2005
  • Purpose : To assess the clinical efficacy of DJH on the dryness of vagina and difficulty in sexual intercourse in climacteric women. Methods : 7 climacteric women who are suffering from the dryness of vagina and sexual problems received DJH: 2 pills(4g) a time, three times a day for a total 8 weeks as maintenance therapy. We evaluated ultrasonography, BMD, blood test, urine analysis, female hormone test and questionnaire, Kupperman's index plus two questions about urogenital and sexual problems in before as well as after 8 weeks of treatment. Results : The results are as follows; 1. DJH reduced climacteric symptoms.(Kupperman's index from 61.4 to 30.2 points) 2. DJH was very effective to dryness of vagina and difficulty in sexual life caused by deficiency of estrogen. 3. The affirmative efficacy of DJH improved sexual satisfaction in consequence. Conclusion : The DJH showed positive effects on improving, not only the climacteric symptoms, but also the sexual satisfaction. It shows that DJH may represent a satisfactory therapeutic choice for those climacteric women with the urogenital tract disturbances and sexual problems.

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