• Title/Summary/Keyword: Observational methods

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When Work is Related to Disease, What Establishes Evidence for a Causal Relation?

  • Verbeek, Jos
    • Safety and Health at Work
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    • v.3 no.2
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    • pp.110-116
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    • 2012
  • Establishing a causal relationship between factors at work and disease is difficult for occupational physicians and researchers. This paper seeks to provide arguments for the judgement of evidence of causality in observational studies that relate work factors to disease. I derived criteria for the judgement of evidence of causality from the following sources: the criteria list of Hill, the approach by Rothman, the methods used by International Agency for Research on Cancer (IARC), and methods used by epidemiologists. The criteria are applied to two cases of putative occupational diseases; breast cancer caused by shift work and aerotoxic syndrome. Only three of the Hill criteria can be applied to an actual study. Rothman stresses the importance of confounding and alternative explanations than the putative cause. IARC closely follows Hill, but they also incorporate other than epidemiological evidence. Applied to shift work and breast cancer, these results have found moderate evidence for a causal relationship, but applied to the aerotoxic syndrome, there is an absence of evidence of causality. There are no ready to use algorithms for judgement of evidence of causality. Criteria from different sources lead to similar results and can make a conclusion of causality more or less likely.

MEDIUM RESOLUTION SPECTRAL LIBRARY OF LATE-TYPE STELLAR TEMPLATES IN NEAR-INFRARED BAND

  • Le, Huynh Anh Nguyena;Kang, Won-Seok;Pak, Soo-Jong;Im, Myung-Shin;Lee, Jeong-Eun;Ho, Luis C.;Pyo, Tae-Soo;Jaffe, Daniel T.
    • Journal of The Korean Astronomical Society
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    • v.44 no.4
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    • pp.125-134
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    • 2011
  • We present medium resolution (R = 5000 - 6000) spectra in the near-infrared band, 1.4 - 1.8 ${\mu}m$, for template stars in G, K, and M types observed by the echelle spectrometer, IRCS, at the SUBARU 8.2 m telescope. The identification of lines is based on the spectra of Arcturus (K2 III) in the literature. We measured the equivalent of widths and compared our results to those of Meyer et al. (1998). We conclude that our spectral resolution (R = 6000) data can investigate more accurately the properties of lines in stellar spectra. The library of the template stellar spectra in ASCII format are available for download on the World Wide Web.

The Effects of a Music Therapy Program for Autistic Children in Child Day Care Centers (자폐장애 아동을 대상으로 한 음악치료 중재 효과 연구)

  • Ju, Se-Jin;Choi, Shin-Hyoung;Nam, Ok-Seon
    • The Journal of Korean Academic Society of Nursing Education
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    • v.13 no.1
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    • pp.114-122
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    • 2007
  • Purpose: This study was aimed at evaluating the effects of Music Therapy for the autistic children. Method: The subjects of this study consisted of 3 autistic children who were trained in an Attachment Promotion Therapy Program for 6 months. The Children were all males and 4years 9months, 3years 1 month, and 3years 8month each, and diagnosed with Autism by Child and Adolescent Psychiatrists. Data was collected by using video-taping methods(ADOS, Fagot's Interactive Behavior Code), an interview and observational methods(SMS). Music Therapy intervention was done once a week for 6 months. Data was gathered by quantitative and qualitative analysis. Result: This study showed that the Autism Diagnostic Observation Scale and Social Maturity Quotient(SQ) much improved after the Music Therapy After the Music Therapy, the Interactive Behavior Code : Gaze, Gesture for the communication, Verbal language, Laughing/Smile, and Normal play behaviors increased more than before the intervention. As the results show, the child's behavior became more positively responsive, playful, and attentive to others. Conclusion: This study suggests that Music Therapy might be an effective intervention for autistic disorder children in order to decrease autistic symptoms and increase joint attention behavior.

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The Use of Artificial Intelligence in Screening and Diagnosis of Autism Spectrum Disorder: A Literature Review

  • Song, Da-Yea;Kim, So Yoon;Bong, Guiyoung;Kim, Jong Myeong;Yoo, Hee Jeong
    • Journal of the Korean Academy of Child and Adolescent Psychiatry
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    • v.30 no.4
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    • pp.145-152
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    • 2019
  • Objectives: The detection of autism spectrum disorder (ASD) is based on behavioral observations. To build a more objective datadriven method for screening and diagnosing ASD, many studies have attempted to incorporate artificial intelligence (AI) technologies. Therefore, the purpose of this literature review is to summarize the studies that used AI in the assessment process and examine whether other behavioral data could potentially be used to distinguish ASD characteristics. Methods: Based on our search and exclusion criteria, we reviewed 13 studies. Results: To improve the accuracy of outcomes, AI algorithms have been used to identify items in assessment instruments that are most predictive of ASD. Creating a smaller subset and therefore reducing the lengthy evaluation process, studies have tested the efficiency of identifying individuals with ASD from those without. Other studies have examined the feasibility of using other behavioral observational features as potential supportive data. Conclusion: While previous studies have shown high accuracy, sensitivity, and specificity in classifying ASD and non-ASD individuals, there remain many challenges regarding feasibility in the real-world that need to be resolved before AI methods can be fully integrated into the healthcare system as clinical decision support systems.

NEWLY DISCOVERED z ~ 5 QUASARS BASED ON DEEP LEARNING AND BAYESIAN INFORMATION CRITERION

  • Shin, Suhyun;Im, Myungshin;Kim, Yongjung;Jiang, Linhua
    • Journal of The Korean Astronomical Society
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    • v.55 no.4
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    • pp.131-138
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    • 2022
  • We report the discovery of four quasars with M1450 ≳ -25.0 mag at z ~ 5 and supermassive black hole mass measurement for one of the quasars. They were selected as promising high-redshift quasar candidates via deep learning and Bayesian information criterion, which are expected to be effective in discriminating quasars from the late-type stars and high-redshift galaxies. The candidates were observed by the Double Spectrograph on the Palomar 200-inch Hale Telescope. They show clear Lyα breaks at about 7000-8000 Å, indicating they are quasars at 4.7 < z < 5.6. For HSC J233107-001014, we measure the mass of its supermassive black hole (SMBH) using its C IV λ1549 emission line. The SMBH mass and Eddington ratio of the quasar are found to be ~108 M and ~0.6, respectively. This suggests that this quasar possibly harbors a fast growing SMBH near the Eddington limit despite its faintness (LBol < 1046 erg s-1). Our 100% quasar identification rate supports high efficiency of our deep learning and Bayesian information criterion selection method, which can be applied to future surveys to increase high-redshift quasar sample.

Cluster Model of Multilingual Training of University Students: Theory and Practice of Engineering Education

  • Suvorova, Svetlana;Khilchenko, Tatyana;Gnatyshina, Elena;Uvarina, Natalia;Savchenkov, Alexey
    • International Journal of Computer Science & Network Security
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    • v.22 no.10
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    • pp.107-112
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    • 2022
  • Nowadays clusters are recognized as an important instrument for promoting industrial development, innovation, competitiveness and growth. An educational cluster is a set of interrelated vocational educational institutions of various levels that are united by industry with each other and are connected by partnership with industry enterprises. This article attempts to develop and describe cluster model of university students' multilingual training. The purpose of this study is to describe multilingual training of university students and their polycultural competencies formation and to define the process of multilingual training in form of a cluster. The authors consider clusters as an integral part of the educational campus within the concept framework of Shadrinsk State Pedagogical University. To determine the essence of the concept of a cluster model of university students' multilingual training, theoretical, empirical, observational, and diagnostic methods were implemented, such as a review of scientific literature, a compilation of best practices, observation, statistical methods, etc. The authors analyzed the programs of partner universities and organized international webinars and internships for bachelors and masters abroad and developed online courses "Foreign language for undergraduate students and masters". Experimental data obtained during the implementation of cluster training show the effectiveness of the formation of students' polycultural competencies.

A Review of the Korean Traditional Medicine Treatment for Meniscus Injury (반월상 연골판 손상의 한의학적 치료에 대한 국내외 최신 연구 동향 분석)

  • Han, Sihoon;Oh, Taeyoung;Oh, Minseok
    • The Journal of Korean Medicine
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    • v.43 no.1
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    • pp.154-170
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    • 2022
  • Objectives: The purpose of this study was review the current clinical studies about the effect of Korean traditional medicine treatment for meniscus injury. Methods: Clinical studies on Korean traditional medicine treatment of meniscus injury were searched through 11 online databases. We analyzed the authors, publication year, country, study design, subjects, treatment methods, treatment effects, evaluation tools and adverse events of the selected studies. Results: 23 studies which included 9 randomized controlled trials, 8 case reports, 4 retrospective observational studies, 2 non-randomized controlled trials were selected through the databases. A total of 9 Korean traditional medicine treatments were used, among them, acupuncture treatment was the most used. The most commonly used outcome was effective rate. Conclusions: Through this study, we could confirm that Korean traditional medicine is an effective treatment for meniscus injury. It was suggested that various clinical studies on the effects of Korean traditional medicine for meniscus injury are needed and it is necessary to establish more scientific evidence through studies with a high level of evidence.

A Study on the Application of Standard Korean Medicine Clinical Pathway for Dysmenorrhea (월경통 한의표준임상경로 적용 가능성 및 유효성 평가 연구 프로토콜)

  • Choi, Su-Ji;Kim, Dong-Il;Noh, Eun-Ji
    • The Journal of Korean Obstetrics and Gynecology
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    • v.35 no.1
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    • pp.75-90
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    • 2022
  • Objectives: The purpose of this study protocol is firstly to investigate the status of Korean medical treatment of dysmenorrhea, and secondly to investigate effectiveness of the Clinical Pathway (CP) of dysmenorrhea and review the applicability. Methods: This is a multi-center observational study. The data will be prospectively collected from 14 Korean medicine clinics. 45 patients for each of the CP-applied and non-applied groups will be recruited to compare the degree of improvement in menstrual pain. All the diagnosis records, treatment methods, treatment results, adverse events, and medical expenses of patients with dysmenorrhea will be collected. We will investigate the proportion of patients who could be applied with CP, and the actual number of CP applications, and CP completion rate to evaluate the applicability. Additionally, the satisfaction survey will be used to collect feedback from medical staff members and patients. Results: The results of this study will be disseminated through peer-reviewed publications and scientific presentations. Conclusions: This study is expected to provide valuable data for application of standard Korean medicine clinical pathway for dysmenorrhea.

DETECTING INTERSTELLAR OBJECTS BY USING SPACE WEATHER DATA (우주기상 데이터를 활용한 성간천체 탐색)

  • Ryun Young Kwon;Minsun Kim;Sungwook E. Hong;Thiem Hoang
    • Publications of The Korean Astronomical Society
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    • v.38 no.2
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    • pp.91-98
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    • 2023
  • We present a novel method that can enhance the detection success rate of interstellar objects. Interstellar objects are objects that are not gravitationally bound to our solar system and thus are believed to have originated from other planetary systems. Since the finding of two interstellar objects, 1l/'Oumuamua in 2017 and 2l/Borisov in 2019, much attention has been paid to finding new interstellar objects. In this paper, we propose the use of Heliospheric Imagers (HIs) for the survey of interstellar objects. In particular, we show HI data taken from Solar TErrestrial RElation Observatory/Sun Earth Connection Coronal and Heliospheric Investigation and demonstrate their ability to detect 'Oumuamua-like interstellar objects. HIs are designed to monitor and study space weather by observing the solar wind traveling through interplanetary space. HIs provide the day-side observations and thus it can dramatically enlarge the observable sky range when combined with the traditional night-side observations. In this paper, we first review previous methods for detecting interstellar objects and demonstrate that HIs can be used for the survey of interstellar objects.

An Analysis of Domestic Research Trends in the Korean Medicine Treatments for Frozen Shoulder (동결견에 대한 한의학적 치료의 국내 연구동향 분석)

  • Gyun-do Kim;Won-seok Chung
    • Journal of Korean Medicine Rehabilitation
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    • v.33 no.4
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    • pp.145-156
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    • 2023
  • Objectives The purpose of this review is to analyze trends of domestic research in Korean medicine treatment for frozen shoulder. Methods Among the clinical papers published from January 1, 2000 to August 2023, papers that treated frozen shoulders with Korean medicine treatment were searched through five domestic databases (Oriental Medicine Advanced Searching Integrated System, KMbase, Research Information Sharing Service, Science ON, Korean studies Information Service System). Results Finally, 12 studies were included. Three studies were clinical trials and 9 were observational studies. The most commonly used treatment was acupuncture. Range of movement (range of motion) and visual analogue scale were frequently used as measurement methods. Studies with significant effects were 66.6% in controlled trials and 100% in studies without control group. Conclusions In this study, literature on Korean medicine treatment for frozen shoulder was reviewed. As a result of the review, Korean medicine treatment for frozen shoulder showed significant results. However, there have been several limitations and suggest that more research and higher levels of research on Korean medicine treatment of frozen shoulder need to be conducted.