• Journal of Korean Neurosurgical Society
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• v.56 no.2
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• pp.162-165
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• 2014

Idiopathic hypertrophic spinal pachymeningitis (IHSP) is a chronic, progressive, inflammatory disorder characterized by marked fibrosis of the spinal dura mater with unknown etiology. According to the location of the lesion, it might induce neurologic deficits by compression of spinal cord and nerve root. A 58-year old female with a 3-year history of progressive weakness in both lower extremities was referred to our institute. Spinal computed tomography (CT) scan showed an osteolytic lesion involving base of the C6 spinous process with adjacent epidural mass. Magnetic resonance imaging (MRI) revealed an epidural mass involving dorsal aspect of cervical spinal canal from C5 to C7 level, with low signal intensity on T1 and T2 weighted images and non-enhancement on T1 weighted-enhanced images. We decided to undertake surgical exploration. At the operation field, there was yellow colored, thickened fibrous tissue over the dura mater. The lesion was removed totally, and decompression of spinal cord was achieved. Symptoms improved partially after the operation. Histopathologically, fibrotic pachymeninges with scanty inflammatory cells was revealed, which was compatible with diagnosis of idiopathic hypertrophic pachymeningitis. Six months after operation, motor power grade of both lower extremities was normal on physical examination. However, the patient still complained of mild weakness in the right lower extremity. Although the nature of IHSP is generally indolent, decompressive surgery should be considered for the patient with definite or progressive neurologic symptoms in order to prevent further deterioration. In addition, IHSP can present as an osteolytic lesion. Differential diagnosis with neoplastic disease, including giant cell tumor, is important.

• Transactions of the Korean Society of Automotive Engineers
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• v.16 no.1
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• pp.86-92
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• 2008

Recently, the use of tubes in the manufacturing of the automobile parts has increased and therefore many automotive manufactures have tried to use hydro-forming technology. The hydro-forming technology may cause many advantages to automotive applications in terms of better structural integrity of the parts, lower cost from fewer part count, material saving, weight reduction, lower spring-back, improved strength and durability and design flexibility. In this study, the whole process of front engine cradle (or front sub-frame) parts development by tube hydro-forming using steel material having tensile strength of 440MPa grade is presented. At the part design stage, it requires feasibility study and process design aided by CAE (Computer Aided Design) to confirm hydro-formability in details. Effects of parameters such as internal pressure, axial feeding and geometry shape on automotive sub-frame by hydro-forming process were carefully investigated. Overall possibility of hydro-formable sub-frame parts could be examined by cross sectional analyses. Moreover, it is essential to ensure the formability of tube material on every forming step such as pre-bending, preforming and hydro-forming. At the die design stage, all the components of prototyping tools are designed and interference with press is examined from the point of geometry and thinning.

• The Journal of the Korea Contents Association
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• v.14 no.2
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• pp.319-329
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• 2014

Purpose: The purpose of this study was to investigate the effect of adolescent's family function, impulsive behavior, stress on the bullying types. Method: Data were collected from 627 adolescents and analyzed using descriptive statistics, t-test, Pearson correlation coefficients and stepwise multiple regression with the SPSS 18.0. Results: The bullying types (injurer and victim) correlates with family function, impulsive behavior and stress. Stepwise multiple regression analysis showed emotional reactivity, non-planning impulsiveness, friends related stress, experience of drinking (yes), experience of parent depression problem (yes), explained 34.1% of the total variance in bully injurer. Stepwise multiple regression analysis showed communication, motor impulsiveness, friends related stress, gender (male), grade (junior high school), explained 30.9% of the total variance in bully victim. Conclusion: The results of this study are expected to be used as basic data in providing a better understanding of adolescents' bullying, in preventing bullying and in developing an intervention program.

• Journal of Korean Neurosurgical Society
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• v.41 no.1
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• pp.7-10
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• 2007

Objective : The aim of this study was to determine the efficacy of percutaneous radiofrequency neurotomy[RFN] of ramus communicans nerve in patients suffering from severe low back pain due to osteoporotic compression fracture. Methods : Twenty two patients with lumbar osteoporotic compression fracture who had intractable back pain for less than two weeks and were performed with RFN at L1-L4 from May 2004 to December 2005 were retrospectively analyzed. Clinical outcome using visual analogue scale[VAS] pain scores and modified MacNab's grade was tabulated. Complications related to the procedure were assessed. Results : Twenty-two female patients [age from 63 to 81 years old] were included in this study. The mean VAS score prior to RFN was 7.8, it improved to 2.6 within postoperative time of 48 hours, and the mean VAS score after 3 months was 2.8, which was significantly decreased. Eighteen of 22 patients were graded as excellent and good according to modified MacNab's criteria at final follow up. All patients recovered uneventfully, and the neurologic examination revealed no deficits. Two patients showing poor results worsened in symptom. Percutaneous was performed eventually resulting in symptom improvement. There were no significant complications related to the procedure such as sensory dysesthesia, numbness or permanent motor weakness. Conclusion : RFN is safe and effective in treating the painful osteoporotic compression fracture. in patients with intractable back pain due to lumbar osteoporotic compression fracture, RFN of gray ramus communicans nerve should be considered as a treatment option prior to vertebroplasty.

• Journal of Korean Neurosurgical Society
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• v.52 no.2
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• pp.138-143
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• 2012

Objective : This is a retrospective review of 22 surgically treated benign and malignant tumors of brachial plexus region to describe clinical presentation, the characteristics of brachial plexus tumor and clinical outcomes with a literature review. Methods : Twenty-one patients with consecutive 22 surgeries for primary brachial plexus tumors were enrolled between February 2002 and November 2011 were included in this study. The medical records of all patients were reviewed. Results : Eleven male and 10 female patients were enrolled. Mean age was 39 years. Three patients had brachial plexus tumor associated with neurofibromatosis (13.6%). Presenting signs and symptoms included parenthesis and numbness (54.5%), radiating pain (22.7%), direct tenderness and pain (27.2%), palpable mass (77.3%). Twelve patients presented preoperative sensory deficit (54.5%) and 9 patients presented preoperative motor deficit (40.9%). Twenty tumors (90.9%) were benign and 2 tumors (9.1%) were malignant. Benign tumors included 15 schwannomas (68.2%), 4 neurofibromas (18.2%) and 1 granular cell tumor (4.5%). There were 1 malignant peripheral nerve sheath tumor (MPNST) and 1 malignant granular cell tumor. Gross total resection was achieved in 16 patients (72.7%), including all schwannomas, 1 neurofibroma. Subtotal resection was performed in 6 tumors (27.3%), including 3 neurofibromatosis associated with brachial plexus neurofibromas, 1 MPNST and 2 granular cell tumor in one patient. Conclusion : Resection of tumor is the choice of tumor in the most of benign and malignant brachial plexus tumors. Postoperative outcomes are related to grade of resection at surgery and pathological features of tumor.

• Journal of The Korean Association For Science Education
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• v.13 no.2
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• pp.296-307
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• 1993

The purpose of this study was to identify concretely how to improve inquiry learning. To put the purpose in detail : 1) to define the inquiry skills 2) to select the factors of inquiry skills appropriate to the content of Science I (earth science) textbook 3) to develop items which consist of experimental inquiry and concept inquiry in due proportion, to evalute inquiry skills 4) to analyze the relationship between high school students' cognitive levels and the achievement of science inquiry skills. To achieve these objectives, the investigator sampled 558 students in eleventh grade, living in Seoul, Chung-Ju and Kwang-Ju, and evaluated their cognitive levels and the achievement of science inquiry skills. The results of this study showed that the cognitive levels of students were lower than those identified in Piaget's work and that the achievement of science inquiry skills were low also. It may be thought that one of most important reasons to bring about those results is lacking in adaptation capability of science inquiry items and inquiry learning. So, it can be recommended as a way to heighten cognitive levels to make inquiry learning using the textbook content. In conclusion, the investigator make suggestions as follows : 1) to give inquiry learning which consist of experimental inquiry and concept inquiry in due proportion 2) to develop inquiry items to include content for evaluating inquiry learning, and test items for psycho-motor areas 3) to publish textbooks which motivate students' inquiry activities and develop their creative thinking, considering students' cognitive levels and inquiry skills.

• Asian Oncology Nursing
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• v.11 no.3
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• pp.254-262
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• 2011

Purpose: The purpose of this study was to identify the quality of life in colorectal cancer patients with chemotherapy-induced peripheral neuropathy. Methods: A total of 93 patients were recruited in the cross-sectional survey design. Quality of life in colorectal cancer patients were measured by European Organization for Research and Treatment of Cancer (EORTC) QLQ C30 and CIPN20. Results: In the QLQ C30, the mean score of the global health status was 59.41, the functional scale was 73.29 and symptom scale was 26.72. In CIPN20, the mean score of sensory scale was 32.70, autonomic scale was 22.88 and motor scale was 16.12. In the QLQ C30, the global health status showed significant differences according to surgery (p=.027) and the functional scale, and the symptom scale showed significant differences according to gender (p=.046, p=.020) and nonpharmacologic intervention (p=.001, p=.009). The CIPN20, the sensory scale showed significant differences according to age (p=.006), DM (p=.005), grade of CIPN (p=<.001) the status of chemotherapy (p=.001) and nonpharmacologic intervention (p=.010). Conclusion: The level of quality of life in colorectal cancer patients with peripheral neuropathy was relatively low. There is a need for developing a nursing intervention for colorectal cancer patients to improve their quality of life and to decrease chemotherapy-induced peripheral neuropathy.

• Transactions of the Korean Society of Automotive Engineers
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• v.16 no.3
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• pp.38-43
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• 2008

The hydroforming technology has been spreaded dramatically in automotive industry last 10 years. Itmay cause many advantages to automotive applications in terms of better structural integrity of the parts, lower cost from fewer part count, material saving, weight reduction, lower springback, improved strength and durability and design flexibility. In this study, the whole process of rear sub-frame parts development by tube hydroforming using steel material having tensile strength of 440MPa grade is presented. At the part design stage, it requires feasibility study and process design aided by CAE (Computer Aided Design) to confirm hydroformability in details. Effects of parameters such as internal pressure, axial feeding and geometry shape in automotive rear sub-frame by hydroforming process were carefully investigated. Overall possibility of hydroformable sub-frame parts could be examined by cross sectional analyses. Moreover, it is essential to ensure the formability of tube material on every forming step such as pre-bending, preforming and hydroforming. In addition, all the components of prototyping tool are designed and interference with press is examined from the point of geometry and thinning.

• Journal of Acupuncture Research
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• v.29 no.3
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• pp.139-148
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• 2012

Objectives : The purpose of this case is to report the improvement of two patients diagnosed with eight and a half syndrome after combination therapy of oriental and western medicine. Methods : We treated the patients with combination therapy of oriental and western medicine such as acupuncture, moxibustion, herbal medication, antithrombotic agents and steroid therapy. Changes of peripheral facial paralysis were evaluated using House-Brackmann facial grading system and the degree of dizziness, tenderness and pain of upper abdomen were assessed using numerous rating scale. Changes in motor grade of upper and lower extremities were evaluated using medical research council scale. Results : We have recently experienced two cases of eight and a half syndrome - a syndrome characterized by the coexistence of one and a half syndrome, a rare ophthalmoparetic syndrome characterized by a conjugate horizontal gaze palsy in one direction and an internuclear ophthalmoplegia in the other, and cranial nerve VII palsy. The one and a half syndrome was caused by acute cerebral infarction. Two patients in this report were improved through combination therapy of oriental and western medicine. Conclusions : We report the clinical course and treatment methods of eight and a half syndrome.

• Child Health Nursing Research
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• v.8 no.4
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• pp.365-380
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• 2002

This study was to develop and evaluate injury prevention education proposal which will helpful and can be utilized directly on the first line spot for elementary school children. Education proposal development and evaluation process was 1) Construction of 10-times education proposal contents proper to schooler 2) Testify validity through 3 pediatric nursing professor and 4 elementary school nurse 3) Pretest was done from March, 2002 to July on 3-6th grade 313 elementary school students 4) Through correction and revision after pretest evaluation meeting, final injury prevention education proposal was developed 5) After 10-times injury education, evaluation was carried out about the degree of help in education contents and general constitution of injury education to total subjects of educated children. Injury prevention education proposal consists of 10 times and each subjects are followings. 1st is 「introduction of injury prevention education and the importance of injury prevention」 2nd is「safety in and around home」, 3rd is 「injury prevention in school」, 4th is 「prevention of violence」, 5th is 「motor vehicle safety」, 6th is 「water safety」, 7th is 「prevention of fire and burns」, 8th is 「toy and product safety」, 9th is 「sports and recretional activities safety」and the final 10th is 「injury prevention caused by animals」. In the evaluation, the degree of help in education contents showed it helped to children averaged 1.66 and general constitution showed averaged 2.17 that children satisfied about developed injury prevention proposal. This study expected to provide systematic and concrete guidance in injury prevention education for elementary school children.