• 디지털융복합연구
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• 제13권11호
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• pp.493-507
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• 2015

본 연구는 휴먼서비스분야 실천현장에서 요구되는 다문화 역량의 중요성을 강조하면서 다문화에 대한 대학의 교육 실태와 학생들의 다문화 역량에 대한 연구를 수행하였다. 분석한 결과, 문화적 역량 수준은 평균 3.49점으로 중간 이상 높은 것으로 나타났다. 외국경험에 있어서는 외국을 방문한 경험을 가지고 있거나 외국에서 거주한 적이 있거나, 외국인 친구가 있거나, 외국어로 의사소통이 가능하다고 응답한 학생들의 문화적 역량이 높은 것으로 나타났다. 또 조사대상자의 성별과 전공에 따른 문화적 역량을 비교한 결과, 유의한 차이가 있는 것으로 나타났다. 이상의 조사결과를 바탕으로 대학생의 해외 자원봉사활동을 적극 지원하고, 다른 문화적 배경을 가진 집단을 위한 국내 자원봉사활동에도 학생들의 참여를 독려할 필요가 있다.

• Journal of Korean Neurosurgical Society
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• 제58권3호
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• pp.225-230
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• 2015

Objective : The clinical outcomes according to the radiological results after cervical total disc replacement (TDR) are not well established. Here, the authors reviewed the clinical results according to the asymmetry in radiographs. Methods : This retrospective analysis included patients after TDR ($Mobi-C^{(R)}$ disc) with at least 12 months follow up, and the clinical and radiological data were obtained preoperatively and postoperatively for 12 months. Clinical outcome measures numerical rating scale (NRS) score for neck pain, visual analog scale (VAS) for arm pain, and the Oswestry disability index (ODI) value. The asymmetries of TDRs were evaluated on the anterior-posterior (AP) and the lateral radiographs, and the radiographic adjacent segment degenerations were evaluated for 12 months. Results : A total of 24 patients (one level cervical TDR; 10 male and 14 female; aged $41.50{\pm}8.35years$) were included in this study. The clinical results including NRS for neck pain, VAS for arm pain, and ODIs were similar between the normal and asymmetrized TDRs in AP and lateral radiographs. The radiographic adjacent segment degenerations were significantly increased in deviated TDRs (AP >10 mm asymmetry and lateral>10 mm asymmetry). Conclusion : Asymmetrical location of TDR is not related to the clinical outcomes, but related to the risk of radiographic adjacent disc segment degeneration.

• Journal of Korean Neurosurgical Society
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• 제59권6호
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• pp.590-596
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• 2016

Objective : Rheumatoid arthritis (RA) is a systemic disease that can affect the cervical spine, especially the atlantoaxial region. The present study evaluated the risk factors for atlantoaxial subluxation (AAS) development and progression in patients who have undergone surgical treatment. Methods : We retrospectively analyzed the data of 62 patients with RA and surgically treated AAS between 2002 and 2015. Additionally, we identified 62 patients as controls using propensity score matching of sex and age among 12667 RA patients from a rheumatology registry between 2007 and 2015. We extracted patient data, including sex, age at diagnosis, age at surgery, disease duration, radiographic hand joint changes, and history of methotrexate use, and laboratory data, including presence of rheumatoid factor and the C-reactive protein (CRP) level. Results : The mean patient age at diagnosis was 38.0 years. The mean time interval between RA diagnosis and AAS surgery was $13.6{\pm}7.0$ years. The risk factors for surgically treated AAS development were the serum CRP level (p=0.005) and radiographic hand joint erosion (p=0.009). The risk factors for AAS progression were a short time interval between RA diagnosis and radiographic hand joint erosion (p<0.001) and young age at RA diagnosis (p=0.04). Conclusion : The CRP level at RA diagnosis and a short time interval between RA diagnosis and radiographic hand joint erosion might be risk factors for surgically treated AAS development in RA patients. Additionally, a short time interval between RA diagnosis and radiographic hand joint erosion and young age at RA diagnosis might be risk factors for AAS progression.

• Journal of Korean Neurosurgical Society
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• 제50권3호
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• pp.224-230
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• 2011

Objective : This study aimed to show the possibility of neural canal enlargement and restoration of bony fragments through laminectomy and minimal facetectomy without pediculectomy or an anterior approach, and also to prove the adequacy of posterior stabilization of vertebral deformities after thoracolumbar bursting fracture. Methods : From January 2003 to June 2009, we experienced 45 patients with thoracolumbar burst fractures. All patients enrolled were presented with either a neural canal compromise of more than 40% with a Benzel-Larson Grade of VI, or more than 30% compromise with less than a Benzel-Larson Grade of V. Most important characteristic of our surgical procedure was repositioning retropulsed bone fragments using custom-designed instruments via laminectomy and minimal facetectomy without removing the fractured bone fragments. Beneath the dural sac, these custom-designed instruments could push the retropulsed bone fragments within the neural canal after the decompression and bone fragment repositioning. Results : The mean kyphotic deformities measured preoperatively and at follow-up within 12 months were 17.7 degrees (${\pm}6.4$ degrees) and 9.6 degrees (${\pm}5.2$ degrees), respectively. The mean midsagittal diameter improved from 8.8 mm (${\pm}2.8$ mm) before surgery to 14.2 mm (${\pm}1.6$ mm) at follow-up. The mean traumatic vertebral body height before surgery was 41.3% (${\pm}12.6%$). At follow-up assessment within 12 months, this score showed a statistically significant increase to 68.3% (${\pm}12.8%$). Neurological improvement occurred in all patients. Conclusion : Though controversy exists in the treatment of severe thoracolumbar burst fracture, we achieved effective radiological and clinical results in the cases of burst fractures causing severe canal compromise and spinal deformity by using this novel custom-designed instruments, via posterior approach alone.

• 한국융합학회논문지
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• 제11권7호
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• pp.59-71
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• 2020

본 연구는 비전테라피가 시각 문제를 가지고 있는 ADHD 경향 아동의 증상과 시지각 기술을 향상시키는지 알아보고자 한다. 본 연구의 대상자는 ADHD 경향이 있는 아동 중 시각적인 문제를 가지고 있는 아동 10명이다. 비전테라피 전·후로 시각 기능 검사, 시지각 운동협응 검사, 시지각 기술 검사, ADHD 평가척도 검사를 실시하였다. 비전테라피는 주 2회, 6개월~1년 동안 실시되었다. 비전테라피 후에 대상자 모두 시각기능의 시력, 입체시, 버전스 범위, 폭주 근점에서 정상 범위에 도달했으며, 시각 기능과 시지각 기술이 향상되었고 ADHD 증상에 대한 점수가 낮아진 것으로 나타났다. 따라서, 비전테라피가 ADHD 경향을 가진 아동들의 증상과 시지각을 개선하고 시각문제를 해결하는데 활용될 수 있는 것으로 보인다.

• Journal of Korean Neurosurgical Society
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• 제56권4호
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• pp.323-329
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• 2014

Objective : Vertebral body replacement following corpectomy in thoracic or lumbar spine is performed with titanium mesh cage (TMC) containing any grafts. Radiological changes often occur on follow-up. This study investigated the relationship between the radiological stability and clinical symptoms. Methods : The subjects of this study were 28 patients who underwent corpectomy on the thoracic or lumbar spine. Their medical records and radiological data were retrospectively analyzed. There were 23 cases of tumor, 2 cases of trauma, and 3 cases of infection. During operation, spinal reconstruction was done with TMC and additional screw fixation. We measured TMC settlement in sagittal plane and spinal angular change in coronal and sagittal plane at postoperative one month and last follow-up. Pain score was also checked. We investigated the correlation between radiologic change and pain status. Whether factors, such as the kind of graft material, surgical approach, and fusion can affect the radiological stability or not was analyzed as well. Results : Mean follow-up was 23.6 months. During follow-up, $2.08{\pm}1.65^{\circ}$ and $6.96{\pm}2.08^{\circ}$ of angular change was observed in coronal and sagittal plane, respectively. A mean of cage settlement was $4.02{\pm}2.83mm$. Pain aggravation was observed in 4 cases. However, no significant relationship was found between spinal angular change and pain status (p=0.518, 0.458). Cage settlement was seen not to be related with pain status, either (p=0.644). No factors were found to affect the radiological stability. Conclusion : TMC settlement and spinal angular change were often observed in reconstructed spine. However, these changes did not always cause postoperative axial pain.

• Journal of Information Processing Systems
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• 제14권5호
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• pp.1176-1194
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• 2018

The object classification using the images' contents is a big challenge in computer vision. The superpixels' information can be used to detect and classify objects in an image based on locations. In this paper, we proposed a methodology to detect and classify the image's pixels' locations using enhanced bag of words (BOW). It calculates the initial positions of each segment of an image using superpixels and then ranks it according to the region score. Further, this information is used to extract local and global features using a hybrid approach of Scale Invariant Feature Transform (SIFT) and GIST, respectively. To enhance the classification accuracy, the feature fusion technique is applied to combine local and global features vectors through weight parameter. The support vector machine classifier is a supervised algorithm is used for classification in order to analyze the proposed methodology. The Pascal Visual Object Classes Challenge 2007 (VOC2007) dataset is used in the experiment to test the results. The proposed approach gave the results in high-quality class for independent objects' locations with a mean average best overlap (MABO) of 0.833 at 1,500 locations resulting in a better detection rate. The results are compared with previous approaches and it is proved that it gave the better classification results for the non-rigid classes.

• 대한족부족관절학회지
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• 제7권1호
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• pp.101-108
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• 2003

Purpose: To evaluate and analyze the incidence, clinical features, cause and surgical outcomes of iatrogenic hallux varus deformity after hallux valgus surgery. Materials and Methods: Twenty-six Hallux varus deformities after hallux valgus surgery were evaluated. Clinical tolerability, patient's satisfaction and the main causative factor for varus deformity were evaluated. Radiologically, we measured the 1st intermetatarsal angle and hallux valgus angle on pre- & postoperatively. Results: 10 cases of 26 varus deformities were clinically intolerable. The patients complaint of mainly cosmetic and shoe fitting problems rather than pain and the main cause of deformities were over-correction of 1 st intermetatarsal angle. Radiologically, the average 1st intermetatarsal angle was 2.4 degrees and the hallux valgus angle was -9.2 degrees. After varus correction surgery, the average follow up were 17 months and the average 1st intermetatarsal angle was 2.3 degrees and the hallux valgus angle was 2.7 degrees. The average score of AOFAS Hallux Metatarsophalangeal -Interphalangeal Scale was 91 points. Conclusion: The hallux varus deformity after hallux valgus surgery came from mainly overcorrection of 1 st intermetatarsal angle. The management composed of just observation, tendon transfer and fusion, and each method could get satifactory results with appropriate indication.

• 대한족부족관절학회지
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• 제17권1호
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• pp.45-51
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• 2013

Purpose: The purpose of this study was to compare and analyze the results of midfoot arthrodesis with locking plate fixation and the other instruments. Materials and Methods: Twenty one patients, a total of 22 feet who underwent midfoot arthrodesis at our institution were reviewed retrospectively from January 2006 to December 2011. Locking plates were used in 9 cases, and the other instruments such as K-wires, screws, staples were used in 13 cases. Radiologic union time was evaluated and compared between both groups. Preoperative & postoperative AOFAS midfoot scores were evaluated and compared as clinical results. Results: The average AOFAS score was rising from 69.7 to 89.4 in locking plate group and from 67.6 to 80.7 in the other instrument group. There was no statistically significant difference in two groups (p=0.179). The mean radiologic union time was 10.2 weeks in locking plate group, 12.6 weeks in the other instrument group with no significant difference (p=0.062). One case of peroneal nerve irritation was detected as a complication in locking plate group. One case of peroneal nerve irritation and 1 case of superficial wound infection with skin sloughing were detected in the other instrument group. Conclusion: There was no statistically significant difference for union time and clinical results in both groups. A locking plate can be one of the useful option for midfoot arthrodesis.

• Journal of Information Processing Systems
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• 제16권1호
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• pp.6-29
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• 2020

Biometrics identification using multiple modalities has attracted the attention of many researchers as it produces more robust and trustworthy results than single modality biometrics. In this paper, we present a novel multimodal recognition system that trains a deep learning network to automatically learn features after extracting multiple biometric modalities from a single data source, i.e., facial video clips. Utilizing different modalities, i.e., left ear, left profile face, frontal face, right profile face, and right ear, present in the facial video clips, we train supervised denoising auto-encoders to automatically extract robust and non-redundant features. The automatically learned features are then used to train modality specific sparse classifiers to perform the multimodal recognition. Moreover, the proposed technique has proven robust when some of the above modalities were missing during the testing. The proposed system has three main components that are responsible for detection, which consists of modality specific detectors to automatically detect images of different modalities present in facial video clips; feature selection, which uses supervised denoising sparse auto-encoders network to capture discriminative representations that are robust to the illumination and pose variations; and classification, which consists of a set of modality specific sparse representation classifiers for unimodal recognition, followed by score level fusion of the recognition results of the available modalities. Experiments conducted on the constrained facial video dataset (WVU) and the unconstrained facial video dataset (HONDA/UCSD), resulted in a 99.17% and 97.14% Rank-1 recognition rates, respectively. The multimodal recognition accuracy demonstrates the superiority and robustness of the proposed approach irrespective of the illumination, non-planar movement, and pose variations present in the video clips even in the situation of missing modalities.