• 품질경영학회지
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• 제42권3호
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• pp.387-406
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• 2014

Purpose: The widespread use of social network services (SNS) has caused users concern about the disclosure of their privacy or personal information. The purpose of this study is to analyze the factors of privacy concern and self presentation that affect the user resistance in the use of social network service. Methods: This study verifies the factors that affecting the user resistance in SNS. The research model suggested in this study is tested via a survey of 260 SNS users. SPSS and Smart PLS had been used to test the suggested hypotheses. Results: This study shows that privacy experience, privacy awareness, self esteem, and social desirability significantly influence perceived risk and that privacy awareness, self esteem, self efficacy, and perceived risk significantly influence perceived trust. It also verifies that perceived risk and perceived trust positively affect user resistance. Conclusion: This paper suggests that high awareness on privacy of SNS user encourages the SNS companies to consider the privacy protection mechanism for eliminating various factors that affecting the risk. This study also shows that the privacy calculus model applies to understanding the mechanism on resistance of SNS user.

• 정보교육학회논문지
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• 제17권1호
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• pp.93-100
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• 2013

현재 초등학교에서 가장 많이 사용되는 발표용 소프트웨어는 파워포인트이다. 그러나 단지 지식 전달용으로 파워포인트를 사용하고 있으며, 최근에 소개되고 있는 프레지는 프레젠테이션 소프트웨어로서 일반 사용자에게 무료로 제공되며, 풍부한 기능에 비해 제작 과정이 어렵지 않아 빠른 속도로 사용자 수가 증가하고 있다. 기본적 접근을 달리하는 프레지와 파워포인트를 사용한 프레젠테이션의 특성을 규명하고, 현장 실험으로 디지털 스토리텔링 제작을 통해 프레지와 파워포인트 활용 학습이 학습동기에 미치는 영향을 주의집중, 관련성, 자신감, 만족감의 측면에서 분석하였다.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제4권2호
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• pp.199-206
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• 2001

목적: 윌슨병으로 진단 받은 환자들의 진단 당시의 임상 양상의 분포, 발병 연령과 검사 소견들을 파악하고, 또한 초기 발견의 중요성을 고찰하고자 본 연구를 시행하였다. 방법: 1990년 1월부터 10년간 부산 백병원에 입원하여 윌슨병으로 진단 받은 환자 20례를 대상으로 진단 당시의 증상과 증상 발현시기, 진단까지의 기간, 검사 소견 등을 후향적으로 조사하였다. 결과: 20명의 환자들 중에 간 증상 단독 발현은 12명(60%), 그 중 2명은 우연히 AST/ALT가 증가된 것을 발견한 경우였으며, 신경 증상 단독 발현은 2명(10%), 신경 정신증상과 간 증상이 같이 나타난 경우는 4명(20%), 혈액 증상이 주된 경우 1명(5%), 그리고 증상이 없으며 AST/ALT도 정상이나 가족 검진에서 혈중 ceruloplasmin이 감소된 것을 발견한 경우가 1명(5%) 있었다. 모든 환자들에게서 혈중 ceruloplasmin의 농도는 유의하게 낮았다. 가족력은 5례에서 있었다. 간 증상은 진단시 이미 간경화로 진행한 것을 초음파로 진단한 경우가 12명(60%)이었으며, 이 중 2명이 진단 후 1년 내에 사망하였다. 결론: 윌슨병은 빠른 진단과 치료가 중요하다. 그러나 다른 유전성 대사질환들과는 달리 전체 신생아의 선별검사는 의미가 없으며, 환자가 있는 가족에서 혈중 ceruloplasmin과 소변 내 구리, 간 효소 수치와 각막을 검사하는 것이 좋다. 소아기에 간염의 증상이나 지속적으로 증가된 간 효소 수치를 보일 때 또는 가족 중에 원인이 밝혀지지 않은 간질환의 가족력이 있을 때에는 윌슨병을 의심해 보아야 하겠다. 또한 청소년기 이후에 추체외로 증상이나 소뇌 증상 등 운동 신경계의 증상을 호소하든지 혈액 이상, 소변 검사상 이상이 복합적으로 나타나는 경우 등에서도 혈중 ceruloplasmin을 꼭 확인해 보아야 한다. 그 외에 신경 증상 및 정신 증상을 주소로 내원한 경우에도 간기능 검사를 꼭 시행해 보아야 하겠다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제40권
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• pp.7.1-7.5
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• 2018

Background: Oroantral communicating defects, characterized by a connection between the maxillary sinus and the oral cavity, are often induced by tooth extraction, removal of cysts and benign tumors, and resection of malignant tumors. The surgical defect may develop into an oroantral fistula, with resultant patient discomfort and chronic maxillary sinusitis. Small defects may close spontaneously; however, large oroantral defects generally require reconstruction. These large defects can be reconstructed with skin grafts and vascularized free flaps with or without bone graft. However, such surgical techniques are complex and technically difficult. A buccal fat pad is an effective, reliable, and straightforward material for reconstruction. Case presentation: This report describes three cases of reconstruction of large oroantral defects, all of which were covered by a pedicled buccal fat pad. Follow-up photography and radiologic imaging showed successful closure of the oroantral defects. Furthermore, there were no operative site complications, and no patient reported postsurgical discomfort. Conclusion: In conclusion, the use of the pedicled buccal fat pad is a reliable, safe, and successful method for the reconstruction of large oroantral defects.

• Journal of Korean Neurosurgical Society
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• 제30권8호
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• pp.1004-1012
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• 2001

Objective : The spinal cord tumors(including vertebral tumors) are increasingly diagnosed and operated due to development of refined diagnostic and therapeutic tools. It is necessary to re-evaluate clinical features and surgical results of spinal cord tumors with increasing cases and developing treatment modalities. The authors reviewed the spinal cord tumor cases to evaluate their clinical characteristics. Material and Methods : The retrospective review of 654 cases of spinal cord tumors between 1973 and 1999 was done. The clinical features, pathological analysis and surgical results were analyzed and compared to the literature. The results of the study are analyzed with a more detailed consideration of each of major pathologies : neurogenic tumors, meningeal tumors, neuroepithelial tumors, and metastatic tumors. Results and Conclusion : The spinal cord tumor was most common in the 5th decade of age(145 cases, 22.1%) and 78 cases(11.9%) were found in children under 15 years of age. The ratio of male to female was 1.2 : 1. The pathologic diagnosis was neurogenic tumor in 266 cases(40.7%), neuroepithelial tumor in 131(20.0%), metastatic tumor in 118(18.0%), and meningeal tumor in 94(14.4%) in the order of frequency. The tumor was located most frequently in the thoracic area(36.5%) and in the intradural extramedullary space(38.1%). The most common initial presentation was pain(40.1%) and the mean duration for presentation to operation was 14.8 months. The total or gross total removal was possible in 404 cases(61.7%) and the surgical result on the postoperative one month was recovery or improvement in 424 cases(64.8%), stationary in 188(28.7%), progression in 42(6.4%). As a surgical complication, there was a spinal deformity(12 cases), wound infection(5 cases), aspiration pneumonia(5 cases) etc. Neurogenic tumors and menigiomas showed good surgical results, whereas neuroepithelial tumors(except ependymoma) and metastatic tumors showed relatively poor prognosis.

• 대한두개안면성형외과학회지
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• 제16권2호
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• pp.67-72
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• 2015

Background: A schwannoma is a benign, slow-growing peripheral nerve sheath tumor that originates from Schwann cells. Orbital schwannomas are rare, accounting for only 1% of all orbital neoplasms. In this study, we retrospectively review orbital schwannomas and characterize clinical, radiologic, and histologic features of this rare entity. Methods: A retrospective review was performed to identify patients with histologically confirmed orbital schwannoma, among a list of 437 patients who had visited our hospital with soft tissue masses within the orbit as the primary presentation between 2010 and 2014. Patient charts and medical records were reviewed for demographic information, relevant medical and family history, physical examination findings relating to ocular and extraocular sensorimotor function, operative details, postoperative complications, pathologic report, and recurrence. Results: Five patients (5/437, 1.1%) were identified as having histologically confirmed orbital schwannoma and underwent complete excision. Both computed tomography (CT) and magnetic resonance imaging (MRI) studies were not consistent in predicting histologic diagnosis. There were no complications, and none of the patients experienced significant scar formation. In two cases, patients exhibited a mild postoperative numbness of the forehead, but the patients demonstrated full recovery of sensation within 3 months after the operation. None of the five patients have experienced recurrence. Conclusion: Orbital schwannomas are relatively rare tumors. Preoperative diagnosis is difficult because of its variable presentation and location. Appropriate early assessment of orbital tumors by CT or MRI and prompt management is warranted to prevent the development of severe complications. Therefore, orbital schwannomas should be considered in the differential diagnosis of slow-growing orbital masses.

• Archives of Plastic Surgery
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• 제34권4호
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• pp.504-507
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• 2007

Purpose: Chondroid syringoma, previously known as 'mixed tumor of the skin', is a rare benign tumor. It usually presents an asymptomatic solitary firm intradermal or subcutaneous slowly growing nodule. It occurs frequently in the head and neck region of middle-aged men. We would like to report an uncommon chondroid syringoma about the clinical and histologic presentation. about the clinical and histologic presentation. Methods: We experienced two cases of chondroid syringoma on the nose and the upper lip, each other. Both masses were totally excised with clear margin. Results: On histologic examination, the masses showed a biphasic pattern-an epithelial component exhibiting apocrine/eccrine differentiation and a stromal component exhibiting myxoid/collagenous change-consistent with the diagnosis of chondroid syringoma. There have been no evidence of recurrence and malignant transformation during postoperative follow-up. Conclusion: There is no one distinctive clinical feature that is specific for chondroid syringoma. However, it should be included in the differential diagnosis of a solid nodule in head and neck region with long standing duration, such as epidermal inclusion cyst, pilomatrixoma, dermoid cyst, sebaceous cyst, neurofibroma, and basal cell carcinoma.

• 대한임상독성학회지
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• 제8권2호
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• pp.61-68
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• 2010

Purpose: Poisoning is a major health problem for the elderly, and poisoning can cause fatal side effects. However, the characteristics and clinical features of elderly patients with acute poisoning have not been well studied in the previous domestic research. So, we tried to analyze the clinical characteristics and toxic substances of the patients who were 65 years old or older and who were admitted to the regional emergency medical center due to acute poisoning. Methods: We retrospectively reviewed the medical records and poisoning protocols of the patients who were 65 years of age or older and who had with acute poisoning and who visited the ED in our emergency center from January 2005 to December 2009. We collected the demographic information, the gender, the underlying diseases, the causes and toxic substances, the initial presentation, the treatment and the outcomes. Results: A total of 2179 poisoned patients visited the hospital during 5 years, and among them 244 were 65 years of age or older (11.2%). The mean age was $75.6{\pm}6.9$ years and the male:female ratio was 1:1.7. The most common cause of poisoning was suicide (73.4%) and the most common source of poisonous substances was their own drugs. Of the substances used for poisoning, benzodiazepine was the most common drug (25.8%), followed by sedatives other than benzodiazepine (25.4%), insecticide (12.7%), chemical agents (12.3%) and herbicides (8.2%). The most common initial presentation was mental change (64.8%). When comparing the factors between the three elderly groups, there was no difference in gender, the cause, the substances and the underlying disease. The outcomes of treatment included ICU admission (56.1%), a good condition at discharge (12.7%) and admission to a general ward (12.7%). The overall mortality rate was 10.2% for the elderly patients. Conclusion: In this Korean study, unlike the foreign studies, the most common cause of poisoning in elderly patients was intentional poisoning. The admission rate was 68.8% and mortality rate was 10.2%.

• 대한통합의학회지
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• 제9권2호
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• pp.105-108
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• 2021

Background : Hyperornithinemia-hyperammonemia-homocitrullinuria (HHH) syndrome is a rare, autosomal recessive metabolic disorder which is caused by genetic mutations that disrupt the urea cycle. It is characterized by variable clinical presentation and the age of onset. Patients may present with gait disturbance and progressive paraplegia and muscle tightness in the lower extremities. The use of botulinum toxin in metabolic disease has rarely been discussed. We describe a case of a 14-year-old-boy with HHH syndrome, who presented with a several - month history of gait disturbance and lower extremity weakness. Case presentation : A 14-year old male had a history of recurrent upper respiratory tract infections, occasional vomiting, loss of appetite, and general weakness, all of which started since he was 10 months old. He was diagnosed with HHH syndrome at one year of age. At the age of 14, he was referred for the assessment and treatment of his gait disturbance and aggravated weakness of the lower extremities. Brain MRI, electrodiagnostic study and blood test were performed to exclude any lesions related to neurologic dysfunction. Botulinum toxin type A were injected into muscles of adductor longus, adductor magnus, lateral and medial hamstring, and lateral and medial gastrocnemius muscle heads under needle electromyography guidance to reduce lower limb spasticity. Intensive physical therapy including gait training and stretching exercise of adductor and calf muscles were also provided. After intensive physical therapy and botulinum toxin injection to reduce lower limb spasticity, he was able to ambulate for 20 meters independently without any walking aids. There were no adverse events after the injection. Conclusion : Botulinum toxin injection is a safe and effective therapy for patients with HHH syndrome who suffer from gait disturbance.

• 한국식품영양학회지
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• 제20권4호
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• pp.487-493
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• 2007

Internet websites are excellent resources for younger people to gain information related to breastfeeding. So in this study, we evaluated the breastfeeding knowledge of university students, as well as the currently available website information on breastfeeding. Among the criteria, the six most important evaluation categories for the breastfeeding information on websites were selected and identified. The study participants completed the modified Williams and Hammer's tool, in order to evaluate their breastfeeding knowledge. An additional tool took into consideration the website breastfeeding information criteria, to evaluate the Korean websites. This 34 item tool was categorized into milk supply, comfort during breastfeeding, health of the baby and mother, social support, presentation of message, and products or financial motivation. Thirty-seven websites related to breastfeeding were evaluated, and the results were then discussed by nursing students. The students in this study were not knowledgeable on breastfeeding management with regard to the expression and storage of breast milk, the prevention and care of sore nipples, or use of breastfeeding aids. The breastfeeding information found on the Korean websites received positive evaluations for milk supply, comfort during breastfeeding, and health of the baby and mother. However, the educational content on social support, the message presentation, and the product areas on websites were rare or required additional information from breastfeeding specialists. In conclusion, based on our empirical survey, we need to design websites and evaluation tools for accurate website information regarding the social and economic benefits of breastfeeding, so that Korean women are better motivated to breastfeed by the information they obtain through the Internet.