• Imaging Science in Dentistry
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• 제31권2호
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• pp.109-115
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• 2001

The ameloblastic carcinoma is an extremely rare, aggressive odontogenic neoplasm of the jaws. It is described as an ameloblastoma in which there is histologic evidence of malignancy in the primary or recurrent tumors, regardless of whether it has metastasized. We report an aggressive case of ameloblastic carcinoma of the mandible. A 68-year-old man with the complaint of the left facial swelling and intermittent pain was referred to our hospital. Serial images of panoramic radiograph, computed tomograph, and magnetic resonance imaging showed an ill-defined destructive radiolucent lesion of the left mandible. The lesion had typically aggressive behavior with extensive local destruction of bone and extended to the adjacent soft tissues. Bone scan revealed increased uptakes in the left mandibular body and ramus regions. Histological features were generally resembled with those of an ameloblastoma but with cytologic features of epithelial malignancy.

• 대한치과마취과학회지
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• 제11권1호
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• pp.51-54
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• 2011

Wolff-Hirschorn syndrome is a condition that is caused by a deletion of genetic material near the end of the short (p) arm of chromosome 4. The major features of this disorder include a characteristic facial appearance, delayed growth and development, intellectual disability, and seizures. A 9-year-old girl was brought to the clinic with a chief complaint of dental examination. The child was diagnosed as WHS at Samsung medical center. The child was under Sodium valproate, Atrovastatin medication for epilepsy, hyperlipidemia and had a history of heart surgery. So prophylactic antibiotics were recommended. The child was mentally retarded and had seizure so it was difficult to manage her behavior effectively. Thus dental treatment was carried out under general anesthesia. For prompt sedation induction we used 8% sevoflurane shortly. This report presents the case of a 9-year-old girl with WHS, who has received treatment for extensive caries under general anesthesia.

• 품질경영학회지
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• 제40권3호
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• pp.359-371
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• 2012

Purpose: Due to the explosive growth and widespread use of smartphones, new business opportunities are emerging. Despite the importance of creating customer value in using smartphone applications, past studies on have mainly focused on functions or factors and specifications that influence users to use the device. Methods: This study is intended to identify how customer dissatisfaction from the use of smartphone application services affects customer sentiment and behavior. The research model is tested via a survey of 290 smartphone application users. Results: The result of this empirical study indicates that customer dissatisfaction significantly affects the user's disappointment and regret in using a service, which are subordinate values of customer emotion. The user's anger is positively associated with 'Negative word of mouth' and 'Complaint', which are subordinate values of customer behavior, but not with an intention to switch to another service. 'Regret' and 'Disappointment' are positively associated with 'Negative word of mouth' and 'Switching intention', but not with 'Making direct complaints'. Finally, customer's negative sentiments are a significant intermediary in the relationship between customer dissatisfaction and behavioral response. Conclusion: Finally, the study offers a more systematic understanding on the phasal response process of customer dissatisfaction in relation to the provision of smartphone application services.

• 한국가정과교육학회지
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• 제22권3호
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• pp.129-145
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• 2010

서울지역 고등학생을 대상으로 인터넷 쇼핑몰에서의 패션제품 구매행동, 구매후기에 대한 인식, 구매후기의 이용과 작성 및 그에 따른 인식, 의복관여도에 따른 구매후기에 대한 인식 및 구매 후 불만경험과 대응행동을 살펴보았다. 서울지역의 6개 고등학교 508명의 학생들을 대상으로 설문조사를 실시하였고 자료분석은 SPSS 17.0을 이용하여 평균, 표준편차, 빈도, t-test, 일원분산분석을 하였으며 사후검정으로는 Duncan's Multiple Test를 실시하였다. 인터넷 쇼핑몰에서 패션제품 구매이유는 저렴한 가격과 다양성 및 편리성 때문이였고 구매하지 않는 이유는 대부분 화면과 실제의 상품 차이 때문이었다. 학생들은 구매후기를 믿을만하고 유용하다고 인식하였다. 구매후가 내용의 방향과 개수에 대해서는 영향을 받았지만 최신성에 대해서는 영향 받지 않는 것으로 나타났다. 구매후기를 이용하는 학생이 이용하지 않는 학생보다 유용성, 신뢰도, 영향력 모두 높게 인식하였고, 구매후기를 작성하는 학생들이 작성하지 않는 학생들보다 구매후기의 유용성과 신뢰도, 구매후기의 개수에 따른 영향력을 높게 인식하였다. 의복관여도에 따라서는 고관여의 학생들이 중관여와 저관여의 학생들에 비해 구매후기를 유용하다고 인식하였다. 인터넷 쇼핑몰을 통해 패션제품을 구매 후 불만을 경험한 학생들은 불평행동으로 공행동과 무행동을 주로 하는 것으로 나타났다.

• 정신신체의학
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• 제6권2호
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• pp.104-119
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• 1998

This study was conducted to determine the important factors in the illness behavior of panic disorder patients. And then, find the best ways to lead the patients who have recurrent panic attacks to the adequate therapeutic situations. We studied 53 patients diagnosed as panic disorder according to DSM-IV among the outpatients who had been followed up at Bong Seng Memorial Hospital for 6 Ms, from May 1997 to October 1997. To evaluate the illness behaviors, we designed a checklist including socio-demographic data, degree of subjective distress from medical and psychiatric treatment, panic symptoms, life events, places of help-seeking, Anxiety Sensitivity Index. Using the checklist, we had semistructured interviews with the panic disorder patients to elucidate their help-seeking behaviors from first panic attack to diagnosing as panic disorder. The results were as follows ; 1) After first panic attack, the patients initially sought help at 1) Emergency room 40%, 2) Rest &/or Personal emergency care 35%, 3) Pharmacy 10%, 4) Outpatient care at hospital 10%, 5) Oriental medicine 5%. 2) Considering the panic symptoms, derealization, paresthesia and the severity of panic symptoms were the most important factors affecting the patient's help-seeking behaviors who had experienced the first panic attack. 3) Most of all the patients (80%) were apt to visit the hospitals within 15 days after experiencing about 3 panic attacks. 4) Before diagnosed as panic disorder, the patients had visited 3-5 health care centers during about 1 year. 5) Primary care physicaians(for example, emergency care physicians, family doctors and internists) had the most important roles in treating or guiding the patients to the adequate therapeutic situations. From the above results, the authors propose that non-psychiatric physicians have to know the panic disorder or attacks exactly. When patients complaint sudden onset physical symptoms e.g. palpitation, dyspnea, dizziness or the cognitive symptoms like the fear of death or insanity, physicians should consider the possibility of panic attack and encourage the patients to be evaluated for psychiatric illness.

• 정신신체의학
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• 제7권2호
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• pp.247-251
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• 1999

연구배경 : 철분결핍성빈혈은 매우 흔하며 그 원인이 다양하므로 근본 원인을 찾으려는 노력을 하여야만 한다. 저자는 소화기관 출혈, 임신, 과다월경 등의 원인 외에 우리 나라의 의료 특성상 빈번하게 이뤄지고 있는 부항에 의해 발생한 증례를 경험하였으므로 부항으로 인해 발생한 철분결핍성빈혈 2예를 보고하고자 한다. 이들의 행위는 설명모델로 이해될 수 있다. 증례 1 : 27세 여자 환자가 호흡곤란을 주소로 내원하였다. 환자는 10년 전부터 있었던 건선을 치료하기 위해 부항요법을 빈번하게 실시하였고 이로 인한 실혈로 철분결핍성빈혈이 발생하였다. 증례 2 : 70세 남자 환자가 식욕부진과 어지러움을 주소로 내원하였다. 환자는 내원 9개월 전에도 같은 증상이 있어 철분결핍성빈혈로 진단을 받고 치료 받았으나 5년 전부터 족부 무좀에 대해 실시한 부항요법을 지난 번 빈혈치료 후에도 반복해 실시한 결과 철분결핍성빈혈이 발생하였다. 결론 : 철분결핍성빈혈의 원인으로 우리나라 의료의 특성상 부항요법도 고려하여야 한다.

• 한국자동차공학회논문집
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• 제25권2호
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• pp.133-139
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• 2017

The timing chain system, which is a typical power transmission technology applied to a vehicle, has been widely used by the automotive industry because it is normally designed to last a car's lifetime. However, the timing chain system may cause some problems due to the shape of the chains and the polygonal behavior on contact between the chain and the sprocket. In addition, noise and vibration caused by transmission error are the most typical problems encountered by major automotive manufacturers and they are considered as the main source of customer complaint. The initial tension of the chain-sprocket system is thought to be the main cause of transmission error, and it is regarded as the source of engine vibration and noise. The initial tension of the chain system should be controlled carefully since a low initial tension can cause twisting, which may lead to a system malfunction, while a high initial tension can reduce the service life due to a worn down contact surface. In this paper, the kinematic analysis model is generated with various initial tensions, which are controlled by changing the shape of the fixed guide with the largest contact surface with chain. The results showed that the transmission error was minimized on a particular range of initial tension, and the tendency showed that the error changed with a higher sensitivity at a lower initial tension.

• 대한소아치과학회지
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• 제29권2호
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• pp.237-242
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• 2002

Lowe 증후군 또는 안뇌신증후군(oculocerebrorenal syndrome)은 X-염색체와 관련된 유전성 질환으로 반성열성유전양상을 나타낸다. 선천성 백내장과 녹내장 등의 안 증상, 근긴장 저하 건반사감소 등의 근신경계 증상, 신장 기능이상이 가장 특징적인 임상 증상이며, 이외에도 정신 지체, 성장지연, 전두부 융기, 가늘고 성긴 모발, 돌출된 귀, 골질환 등이 발생할 수 있다. Lowe 증후군 환자는 정신지체로 인해 치과치료시 전신마취하에서의 처치가 요구되나, 대사성 산증, 악성고열의 발생위험과 사용약제에 의한 부작용 등이 위험요소로 작용할 수 있으므로, 필요한 경우 내과 또는 소아과 의료진이 참여된 협진체제 하에서 가능한 짧은 시간 진행되어야 한다. 이러한 치과적 처치의 어려움으로 Lowe 증후군 환자에서 치과질환의 예방이 좀더 강조되어야 하면, 이를 위해 보호자의 주위의 적극적 관리가 요구된다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제16권2호
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• pp.179-185
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• 1994

본 환자는 하악우측골체부의 심한 종창 및 동통으로 인한 안모 불균형을 주소로 내원한 50세의 남자환자로 조직검사상 법랑아세포종으로 진단하에 하악골 하연을 보존한 marginal resection을 시행한 뒤 임상적 소견 및 주기적인 방사선 사진상을 관찰한 후 장골이식을 시술하여 술후 2년이 경과한 지금까지 재발의 소견없이 기능 및 심미적으로 양호한 치유과정을 보이고 있다.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제22권3호
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• pp.182-191
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• 2011

Objectives: The aim of this study was to investigate the sleep patterns of South Korean elementary school children and whether the differences in sleep patterns were related to behavior, emotional problems, attention and academic performance. Method: This study included a community sample of 268 boys and girls from fourth-, fifth- and sixth-grade classes in a South Korean metropolitan city from November to December 2010. The primary caregivers completed a questionnaire that included information on demographic characteristics, as well as the Child's Sleep Habit Questionnaire (CSHQ), the Korean version of Child Behavior Checklist (K-CBCL), the Korean version of the Learning Disability Evaluation Scale (K-LDES), the Korean version of ADHD Rating Scale (K-ARS) and the Disruptive Behavior Disorder Scale (DBDS). We conducted analyses on the CSHQ individual items, between the subscales, on the total scores and on the K-CBCL, the K-LEDS, the K-ARS and the DBDS. Results: Based on the findings from the CHSQ, the subjects had significantly higher scores for bedtime resistance ($9.18{\pm}2.17$), delayed sleep onset ($1.32{\pm}0.62$), the sleep duration ($4.19{\pm}1.52$) and daytime sleepiness ($14.10{\pm}3.55$) than the scores from the previous reports on children from western countries. The total CHSQ score showed positive correlations to all subscales of the K-CBCL : withdrawn (r=0.24, p<.005), somatic complaint (r=0.24, p<.005) and anxious/depressive (r=0.38, p<.005). Bedtime resistance was associated with oppositional defiant disorder (r=0.15, p<.05) and a positive correlation was demonstrated between sleep anxiety and the oppositional defiant disorder score (r=0.13, p<.05), night waking and the conduct disorder score (r=0.16, p<.05). Delayed sleep onset was related with low performance on the K-LDES with respect to thinking (r=-0.17, p<.05) and mathematical calculation (r=-0.17, p<.05). Conclusion: The results of this study reconfirm Korean children's problematic sleep patterns. Taken together the results provide that the reduced sleep duration and disruption of sleep pattern can have a significant impact on emotion, behavior, performance of learning in children. Further studies concerning more diverse psychosocial factors affecting sleep pattern will be helpful to understanding of the sleep health in Korean children.