• 보건행정학회지
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• 제13권3호
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• pp.21-34
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• 2003

Patient revisit to used hospital is a key factor in determining a health care organization's competitive advantage and survival. This article examines the relationship between customer's satisfaction and his/her revisit associated with three different methods which are the Chi Square Automatic Interaction Detection(CHAID) for segmenting the outpatient group, logistic regression and neural networks for addressing the outpatient's revisit. The main findings indicate that the important factors on outpatient's revisit are physician's kindness, nurse's skill, overall level of satisfaction, hospital reputation, recommendation, level of diagnoses and outpatient's age. Among these ones, physician's kindness is the most important factor as guidelines for decision of their revisit. The decision maker of hospital should select the strategy containing the variable amount of the level of revisit and size of outpatient's group under the constraint on the hospital's time, budget and manpower given. Finally, this study shows that neural networks, as non-parametric technique, appear to more correctly predict revisit than does logistic regression as a parametric estimation technique.

• 소음진동
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• 제6권3호
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• pp.325-332
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• 1996

One of the greatest shortcoming in today's predictive maintenance program is the ability to diagnose the mechanical and electrical problems within the machine when the vibration exceeds preset overall and spectral alarm levels. In this study, auto-diagnosis system is constructed by using A/D converter to convert analog to digital singal. With this device the system analyses input signal to diagonosis machine condition. Many plots, which display machine condition, and input values of every channel are calculated in this system. If the falut is found, the system diagnoses automatically using fuzzy algorithm and trend monitoring. Prediction is also performed by the grey system theory. Operator finds out eh machine operating condition intuitively based on with personal computer CRT in using this system.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 춘계학술대회 논문집
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• pp.1463-1467
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• 2005

This paper proposes an analytical redundancy technique for fault diagnostics of the sensor in steer-by-wire system. We use incorporating vehicle dynamics modeling into the design of a diagnostic system for steer-by-wire system. The use of a model of vehicle dynamics improves the speed and accuracy of the diagnoses. The proposed fault diagnostics algorithm is based on parity-space methods to generate residuals. To reduce the effects of modeling uncertainty and dynamic transients, the residuals are subject to filtering. We construct diagnostic system consisting residual threshold for detection and isolator with using the directional residual vector.

• Animal Systematics, Evolution and Diversity
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• 제30권2호
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• pp.151-157
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• 2014

A taxonomic study of two omaliine genera Acruliopsis Zerche and Omalium Gravenhorst in Korea is presented. Two species (Acruliopsis ussuriensis Zerche and Omalium japonicum Sharp) are reported for the first time in Korea. Diagnoses of those two genera with redescriptions of the species are presented. Acruliopsis ussuriensis is distinguished by more or less short elytra, a pair of conspicuous processes on male sternite VII and emargination of outer lateral margin of paramere at base. Omalium japonicum is distinguished by brown elytra and structure of aedeagus with swollen median lobe and expanded paramere. Habitus photographs and illustrations of diagnostic characters are provided.

• Animal Systematics, Evolution and Diversity
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• 제36권1호
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• pp.91-105
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• 2020

The eight newly recognized species of the genera Delomerista, Iseropus, and Perithous are reported in this study: Delomerista kusuoi Uchida & Momoi, 1957, D. mandibularis(Gravenhorst, 1829), D. pfankuchi Brauns, 1905, Iseropus stercorator stercorator(Fabricius, 1793), Perithous albicinctus(Gravenhorst, 1829), P. septemcinctorius(Thunberg, 1822), P. speculator Haupt, 1954, and P. townesorum (Gupta, 1982). The genus Delomerista Förster, 1869 is a small group that includes 18 species worldwide that, for the first time, has been recorded from South Korea. Iseropus Förster, 1869 is a small group that includes nine species worldwide. The genus Perithous Holmgren, 1859 is also small group including 18 species worldwide. In this study, keys to species of these genera and illustrations and diagnoses of each species are provided.

• Animal Systematics, Evolution and Diversity
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• 제36권1호
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• pp.60-77
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• 2020

Cecidomyiidae (Diptera) consists of six subfamilies, which are divided into three groups according to larval ecological habits (phytophagous, mycophagous, and zoophagous). The five basal subfamilies of Cecidomyiidae consist entirely of mycophagous species, with approximately 1500 species described worldwide and 29 previously known to occur in Korea. In this study, 37 named species (1 Lestremiinae, 29 Micromyinae, 4 Winnertziinae, and 3 Porricondylinae species) are newly reported from South Korea. We excluded Lestremia yasukunii Shinji from the list of Korean mycophagous cecidomyiids as it is a nomen nudum. Therefore, we herein officially recognize 65 species, 30 genera, and four subfamilies for the Korean mycophagous cecidomyiid fauna. We also provide diagnoses and photographs to aid species identification and discussion on the four years of gall midge taxonomic inventory in South Korea.

• 한국근적외분광분석학회:학술대회논문집
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• 한국근적외분광분석학회 2001년도 NIR-2001
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• pp.1022-1022
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• 2001

To obtain accurate and repeatable analyses using NIR technology it is important to select an NIR instrument and / or its sample presentation attachments which allow the operator to minimize sampling errors without compromising the benefits of NIR analysis -namely rapid, low cost, minimal sample preparation, minimal structural facilities, minimal hazards. For each sample type and consistency there may be different optimal combinations of instrument, sample presentation attachment, and sample preparation. This paper will consider options available to NIR users in the area of plant and soil analysis and evaluate the potential benefits and disadvantages of crop nutrient diagnoses using laboratory based and airborne imaging techniques.

• 대한세포병리학회지
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• 제3권1호
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• pp.19-24
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• 1992

A case of paraganglioma of the retroperitoneum diagnosed by fine needle aspiration cytology is described. A 60-year-old man presented with abdominal discomfort for 4 months. The smear revealed cellular sheets with partly rosettoid appearance. Many piexiform capillaries were distributed between the cellular sheets or encircled the cellular nests forming zell-ballen pattern. The tumor cells were monotonous and oval to round. The cytoplasm was amphophillc, finely granular and poorly defined. The nuclei were round and had evenly dispersed chromatin and small nucleoli. Cells having large or spindle nuclei were some-times observed. The tissue sections showed typical findings of paragnglima. The cytological differential diagnoses included islet cell tumor of the pancreas and carcinold tumor. The clinical and histoloigic findings as well as cytologic findings were helpful to confirm the diagnosis.

• 농촌의학ㆍ지역보건
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• 제35권1호
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• pp.21-35
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• 2010

There are many work-related injuries and diseases of fisheries in Korea. Fishermen have exposed to harmful environment, such as natural disasters, ultraviolet, noise, vibration, organic solvents, ergonomic risk factors, loss of fresh water and food, and psychologic stress. They have suffered from numerous work-related health problems, including musculoskeletal disorders, cardiovascular diseases, infectious diseases, pyschological diseases, decompression sickness, and so on. Sea accidents can cause deaths of fishermen and if sea pollution is occurred, fishermen have a great economic damage. However, the concern of these injuries and diseases has been little because they are small in number and have decreased. Fisheries are important core industries, so the problems of fisheries have to be solved by a government. But work-related injuries and diseases are not investigated properly and accurate diagnoses are not made due to loss of concern. We hope that this article will be a cornerstone to solving the work-related problems of fisheries.

• 한국응용곤충학회지
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• 제50권2호
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• pp.125-130
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• 2011

한국산 균식성 애버섯벌레붙이과에 대한 분류학적 검토를 수행하였다. 한국산 균식성 애버섯벌레붙이과에는 2아과와 2속에 속한 4종이 포함되어 있으나, 본 논문에서는 3종을 검토하였다. 그 가운데 2종 은 한국에서 처음으로 보고되는 종들이다. 성충의 사진, 진단 형질, 특징적인 형질, 서식지를 포함한 생태적 정보와 숙주버섯을 제공하였다.