• Corrugated packaging logistics
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• v.3 no.12
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• pp.144-154
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• 1996

• Corrugated packaging logistics
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• v.3 no.14
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• pp.145-151
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• 1996

• Korea Information Processing Society Review
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• v.1 no.3
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• pp.48-53
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• 1994

• KSCI Review
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• v.3 no.1
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• pp.73-78
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• 1996

• Journal of The Korean Society of Clinical Toxicology
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• v.18 no.2
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• pp.51-56
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• 2020

Purpose: Acute nicotine poisoning by liquid nicotine in electronic cigarettes is becoming an increasing problem worldwide. The current systematic review aimed to determine the harm of acute nicotine poisoning by reviewing published case reports. Methods: An online literature search with PubMed, Embase, Cochrane Library, and KoreaMed database was performed to identify relevant studies addressing acute nicotine poisoning with electronic cigarettes. Two investigators searched the case reports written in English or Korean. Results: Twenty-six cases were included in this study. The routes of intoxication included ingestion in 18 cases, intravenous injection in three cases, subcutaneous injection in two cases, and ocular exposure in two cases. Ten cases had a cardiac arrest, and seven of them died. Seven out of 12 cases with intentional poisoning had a cardiac arrest. Nine children under 18 years were reported, and three of them had a cardiac arrest. Sixteen cases without a cardiac arrest recovered well, except for one case with sudden sensorineural hearing loss. Conclusion: The authors reviewed the risks of electronic cigarette liquid in terms of acute poisoning through a systematic review. The nicotine solution of an e-cigarette can be life-threatening in cases of acute poisoning. Therefore, active emergency treatment with early recognition is necessary. In addition, various management methods and regulations for preventing acute nicotine poisoning, such as restriction of distribution and nicotine concentration, should be considered.

• The Journal of Information Systems
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• v.31 no.4
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• pp.25-45
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• 2022

Purpose In this paper, we propose the method to extend topic modeling techniques in order to derive data-based research hypotheses when establishing research hypotheses for social sciences, As a concept in contrast to the existing deductive hypothesis establishment methodology for the social science research, the topic modeling technique was expanded to enable the so-called inductive hypothesis establishment methodology, and an analysis case of the Seongsan Ilchulbong online review based on the proposed methodology was presented. Design/methodology/approach In this paper, an extension architecture and extension algorithm in the form of extending the existing topic modeling were proposed. The extended architecture and algorithm include data processing method based on topic ratio in document, correlation analysis and regression analysis of processed data for topics derived by existing topic modeling. In addition, in this paper, an analysis case of the online review of Seongsan Ilchulbong Peak was presented by applying the extended topic modeling algorithm. An exploratory analysis was performed on the Seongsan Ilchulbong online reviews through the basic text analysis. The data was transformed into 5-point scale to enable correlation and regression analysis based on the topic ratio in each online review. A regression analysis was performed using the derived topics as the independent variable and the review rating as the dependent variable, and hypotheses could be derived based on this, which enable the so-called inductive hypothesis establishment. Findings This paper is meaningful in that it confirmed the possibility of deriving a causal model and setting an inductive hypothesis through an extended analysis of topic modeling.

• Journal of Chest Surgery
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• v.6 no.2
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• pp.175-180
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• 1973

Aneurysmal bone cysts of rib continue to interest the clinicians because of their rarity. We experienced a case of aneurysmal bone cyst of Rt 10th rib, which was occupying the Rt pleural cavity as a huge mass. This case was treated surgically with good result. In addition, general concept of aneurysmal bone cyst with brief review of literatures was disclosed here.

• Journal of Chest Surgery
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• v.26 no.7
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• pp.579-582
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• 1993

We experienced a case of acquired benign bronchoesophageal fistula associated esophageal diverticulum which was treated successfully by division of ~stulous tract and esophageal diverticulectomy.Benign bronchoesophageal fistulas associated with esophageal diverticulum are very rare. This presentation is characterized by paroxysmal cough especially after drinking liquids and is easily diagnosed by esophagogram. We report a case with review of literatures.

• Journal of Chest Surgery
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• v.18 no.4
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• pp.867-871
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• 1985

The Ewing`s sarcoma is the primary malignant bone tumor but the tumor also occurs as a primary soft tissue neoplasm without involvement of bone. Here is presented a case of extraskeletal Ewing`s sarcoma in the posterior and superior mediastinum with review of literature. To our knowledge, this is the first case report of extraskeletal Ewing`s sarcoma in Korea.

• Journal of Chest Surgery
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• v.3 no.2
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• pp.133-138
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• 1970

Primary cardiac tumors are rare among malignancies, and primary pericardial tumors are much more rare than the former. Recently, the authors experienced a case of primary pericardial mesothelioma confirmed histopathologically in the Department of Thoracic Surgery, N. M. C., and this paper deals with presentation of the case and discussion about diagnostic problem swith brief review of literatures.