• The Journal of Pediatrics of Korean Medicine
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• v.15 no.1
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• pp.165-182
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• 2001

In oriental medicine, diagnostic method was the four examination(四診) which was composed of inspection(望診), inquiring(問診), listening and smelling(聞診), palpation(切診). Inspection of skin color(望色) indicated the observation of patient's complexion(色診). In oriental medical theory, complexion of face was related to meridians(經絡) and zang-fu(贓腑). The change of complexion was reflected the ups and downs of qi(氣) and blood(血), the relative seriousness of an illness. especially, observation of complexion was essential in children, because of diagnostic difficulty and positive change according to each disease. The purpose of this study was to construct for standard measurement and invent for computerizing diagnostic system which was based on observation of complexion. It was objectively measured complexion using spectrophotometer and chroma meter. Measurement of complexion should make an offer the index of diagnosis.

• Proceedings of the KSME Conference
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• 2008.11b
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• pp.2765-2770
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• 2008

The purpose of tunnel ventilation system for long road tunnels is to keep certain levels of Visibility Index and the concentration of CO. Additional equipments such as jet fans are used in road tunnel to discharge pollutants in the road tunnel. The control algorism of tunnel ventilation system takes the value of sensors as input, and then gives the operation method of jet fans in tunnel as output. Information on the variation of CO concentration in tunnel when jet fans are running is needed to minimize their operation time. Numerical analysis is used in this paper because of the difficulty of conducting experiments under standard condition for ventilation of road tunnel. The concentration of CO has been calculated by using 3-dimensional CFD under transient condition with speed of cars, quantity of air ventilation, and the results for various operation position of jet fans are compared.

• Journal of Trauma and Injury
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• v.36 no.4
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• pp.416-420
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• 2023

Blunt intrathoracic tracheal injuries are rare, even among blunt chest trauma patients. An early diagnosis based on a high index of suspicion allows for timely surgical management of potentially fatal airway trauma, thereby improving overall outcomes. Diagnosing these injuries can be difficult due to their nonspecific clinical features and the occasional difficulty in radiologic diagnosis. If a patient exhibits respiratory compromise with difficult ventilation and poor lung expansion, despite the insertion and management of an intercostal drain following high-energy blunt trauma, there should be a heightened suspicion of potential airway trauma. The aim of primary repair is to restore airway integrity and to minimize the loss of pulmonary parenchyma function. This case report discusses the rare clinical presentation of a patient with blunt trauma to the intrathoracic airway, the surgical management thereof, and his overall outcome. Although blunt traumatic injuries of the trachea are extremely rare and often fatal, early surgical intervention can potentially reduce the risk of mortality.

• Industrial Engineering and Management Systems
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• v.3 no.1
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• pp.85-91
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• 2004

The writing styles of TIME and Newsweek are analyzed using a specially developed linguistic program. These two news magazines were chosen because of their wide popularity. As for the results, it became obvious that both the frequency curve of words and that of characters have not changed for the past 60 years. Also, we have found that the frequency curves have some inflection points and that the genre of English writings can be identified by these points. After counting the percentage of required vocabulary for junior high school students and high school students in English writings, we can derive the relative difficulties of them using fuzzy reasoning. Fuzzy rules are constructed using features of the characteristic curves. We feel it would be a good guide index when selecting textbooks or supplementary readers.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2001.05a
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• pp.121-124
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• 2001

Using ordors with the different concentration of essential oils, e studied the effect of a pleasant olfactory stimulation on physiological responses. we examined psychological response, mental task and changes in cardiac, immunity and EEG in responses to 150times solution (feel easily) and 500times solution (feel with difficulty) which of essential oil (called PCK) were diluted in propylene glycol, and neutral (water). The 150times solution that was felt pleasant produced significant differences (p<0.05) in relative power change of beta activity in the left frontal region (Fp1, F3, F7) of the brain, and heart rate (HR) deceleration after mental task. these results are consistent with substantial research that has documented cardiac and EEG responses to pleasant stimuli. What is more, 150times solution increased the concentration of s-IgA know as an index of immunity.

• Journal of Physiology & Pathology in Korean Medicine
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• v.18 no.3
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• pp.935-938
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• 2004

Psoriasis is a common skin disease and the difficulty of its medical management is well known, A report was done on psoriaSis which were treated with aroma therapy to be consulted in Dept. surgery, opthalmology & otolarygology, college of Oriental Medicine, Dongeui University, from Dec. 24, 2003 to Mar. 5, 2004. We gave score and checked involvement in plaque, erythematous popules and invasiveness according to psoriasis area and severity index (PASI). After 75 days of treatment the patient showed that symptoms were disappeared and score of PASI changed from 54.7 to 0. These results that Aroma therapy has good effects on psoriasis in assistant therapy.

• Journal of Dental Anesthesia and Pain Medicine
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• v.20 no.1
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• pp.49-53
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• 2020

Cri-du-chat syndrome (CdCS) is caused by the deletion of the short arm of chromosome 5. Most patients with CdCS develop intellectual disabilities. Therefore, they have poor oral hygiene and a high caries index. However, treating such patients is not an easy task, because of the difficulty in communication. General anesthesia may be a useful option in adult patients with CdCS and intellectual disability. General anesthesia should be administered very carefully, owing to the presence of comorbid diseases, which may need airway management. Infants with CdCS need general anesthesia if they have a concomitant cardiac anomaly. Intubation is reportedly difficult for such patients was, owing to the structural and functional abnormalities in the larynx and vocal cords. The purpose of this study was to report a case of difficult intubation while inducing general anesthesia in a patient with CdCS during dental treatment, due to a narrow larynx and trachea.

• 제어로봇시스템학회:학술대회논문집
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• 1991.10a
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• pp.238-242
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• 1991

This paper presents an approach to self-tuning PI control of dynamic plants, based on fuzzy logic application. A fuzzy logic composed of linguistic conditional statements is employed by defining the relations of input-output variables of the controller. In the synthesis of a fuzzy logic controller, one of the most difficult problem is the selection of linguistic control rules and parameters. To overcome this difficulty, self-tuning fuzzy PI controller (STFPIC) with a hierarchical structure in which the fuzzy PI controller is assigned as the lower level and the rule modification and parameter adjustment as the higher level. The rules and parameters are generated by the adjustment of membership function through performance index(PE). In this paper, the algorithm for of the controller performance is estimated by means of computer simulation.

• Journal of Electrical Engineering and Technology
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• v.9 no.4
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• pp.1394-1400
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• 2014

The current flowing through the overhead transmission lines causes induced voltage on the communication lines, which can be prevented by calculating the induced voltage at the planning stage for overhead transmission line installment through an agreement between the communication and electric power companies. The procedures to calculate the induced voltages, however, are complicated due to the variety of parameters and tower types of the overhead transmission lines. The difficulty necessitates the development of a simulator to measure the induced voltage on the communication lines. This paper presents two simulators developed for this purpose; one using the Data Base (DB) index method and the other using the Graphic User Interface (GUI) method. The simulators described in this paper have been implemented by the EMTP (Electromagnetic Transient Program).

• Journal of The Korean Association For Science Education
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• v.14 no.3
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• pp.251-264
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• 1994

There are a considerable number of instruments in testing science process skills in Korea as well as America and Europe. However, it has been difficult to find the instruments encompass the wide range of scientific process skills. Most instruments developed and used in Korea were focused on a school level or a few components of scientific process skills. In this study, the researchers examined the whole body of scientific process and identified 10 component skills. Three items for each component process skills were developed and revised by two pilot tests. The final instruments showed moderate difficulty, discrimination index, reliability, and validity. The instrument was also tested the usability by finding differences of students' ability on science process skills by grade levels, sexes, and city size. The results showed that the instrument was proved to be useful to discriminates the differences.