하수처리시설 운영관리 최적화를 위한 실시간 자동 제어 및 자산관리 시스템 개발을 위한 연구

김형준,김형준,최한나,김한용 대한환경공학회 2017 대한환경공학회 학술발표논문집 Vol.2017 No.11

삶의 현장을 하나님 나라로!

김형준 한국성서학연구소 2007 성서마당 : 한국교회를 위한 성경연구지 Vol.- No.84

Synthesis of Poly(ester-amide)s Using Bio-based Materials for Engineering Plastics

김형준,김무송,안철희 한국고분자학회 2019 한국고분자학회 학술대회 연구논문 초록집 Vol.44 No.2

u-Learning 환경을 위한 초등학교 교실 공간 모형 연구

김형준 대한건축학회지회연합회 2009 대한건축학회연합논문집 Vol.11 No.1

This research understands an ubiquitous technology and space in terms of the convergence of the electronic space and the physical space. Accordingly, we analyzed the ubiquitous schoolroom space and introduced the space factors for the implement of actuality u-learning environment. Also, we developed the ubiquitous schoolroom design component based on proposed space factors, and presented the schoolroom space model by the actuality example. And, we presented u-learning properties based on 21th century modern space development for forecasting the future u-learning environment. The following is the analyzing contents and the result in this study. First, we analyzed the property of the physical space, the electronic space, and the ubiquitous space created by convergence of these space. We could know that ubiquitous schoolroom space have major property such as flexibility, softness, communication, simultaneity and also have space structure of neuron and rhizome. Additionally, we know that the ubiquitous schoolroom space becomes the optimization when these two structures exist simultaneously. Accordingly, a ubiquitous schoolroom space model based on neuron structure and rhizome structure has to be developed in the future. Second, the realizable ubiquitous schoolroom space is designed by teaching and learning models including ubiquitous technology. These factors are based on flexibility. Accordingly, we described the ubiquitous schoolroom space is reconstructed by teaching and learning models. Third, we represented the ubiquitous schoolroom space have to structure of communication. And structure of communication is enable to integrate private learning spaces and group learning spaces. Therefore, the developed ubiquitous schoolroom space design will be based on communication of variety learning spaces. Fourth, we analyzed the ubiquitous schoolroom space have a lot of learning resources and accesses without barriers. And also ubiquitous schoolroom space have social space enable to communication between teacher and leaner. Accordingly, the ubiquitous learning space have to multi communication spaces not only desk and chair arrangement but also soft spaces arrangements.

Clinical Significance of Pleural Attachment and Indentation of Subsolid Nodule Lung Cancer

김형준,조준연,이연주,박종선,조영재,윤호일,정진행,조석기,김관민,이경원,이재호,이춘택 대한암학회 2019 Cancer Research and Treatment Vol.51 No.4

Purpose Lung cancers presenting as subsolid nodule commonly have peripheral location, making the cancer-pleura relationship noteworthy. We aimed to evaluate the effect of pleural attachment and/or indentation on visceral pleural invasion (VPI) and recurrence-free survival. Materials and Methods Patients who underwent curative resection of lung cancer as subsolid nodules from April 2007 to January 2016 were retrospectively evaluated. They were divided into four groups according to their relationship with the pleura. Clinical, radiographical, and pathological findings were analyzed. Results Among 404 patients with malignant subsolid nodule, 120 (29.7%) had neither pleural attachment nor indentation, 26 (6.4%) had attachment only, 117 (29.0%) had indentation only, and 141 (34.9%) had both. VPI was observed in nodules of 36 patients (8.9%), but absent in nonsolid nodules and in those without pleural attachment and/or indentation. Compared to subsolid nodules with concurrent pleural attachment and indentation, those with attachment only (odds ratio, 0.12; 95% confidence interval [CI], 0.02 to 0.98) and indentation only (odds ratio, 0.10; 95% CI, 0.03 to 0.31) revealed lower odds of VPI. On subgroup analysis, the size of the solid portion was associated with VPI among those with pleural attachment and indentation (p=0.021). Such high-risk features for VPI were associated with earlier lung cancer recurrence (adjusted hazard ratio, 3.31; 95% CI, 1.58 to 6.91). Conclusion Concurrent pleural attachment and indentation are risk factors for VPI, and the odds increase with larger solid portion in subsolid nodules. Considering the risk of recurrence, early surgical resection could be encouraged in these patients.

DCT/LDA 기반 얼굴 인식에 관한 연구

김형준,정병희,김회율,Kim Hyoung-Joon,Jung Byunghee,Kim Whoi-Yul 대한전자공학회 2005 電子工學會論文誌-SP (Signal processing) Vol.42 No.6

본 논문에서는 입력된 얼굴 영상으로부터 구한 DCT 계수에 대해 LDA를 적용하는 DCT/LDA를 이용한 얼굴 인식 방법을 제안한다. 제안된 방법은 적은 수의 DCT 계수를 이용하여 입력 영상을 저차원으로 표현함으로써 특징 공간의 차수보다 트레이닝 데이터의 수가 적은 경우 발생하는 LDA의 SSS 문제를 해결한다. DCT는 기저 벡터가 일정하며 PCA와 유사한 에너지 압축 효율을 가지기 때문에 제안된 방법은 기존의 PCA/LDA 방법보다 학습 속도는 빠르면서 실제 얼굴인식 시스템에 적용이 가능한 정도의 얼굴 인식율을 기대할 수 있다. 실험을 통해 제안된 방법이 PCA/LDA 방법과 유사한 얼굴 인식 성능을 보이면서 약 13,000배 빠르게 학습되는 것을 확인하였고, 기존의 Block-DCT/LDA 방법과 유사하거나 향상된 인식 결과를 확인하였다. This paper proposes a method to recognize a face using DCT/LDA where LDA is applied to DCT coefficients of an input face image. In the proposed method, SSS problem of LDA due to less number of training data than the size of feature space can be avoided by expressing an input image in low dimensional space using DCT coefficients. In terms of the recognition rate, both the proposed method and the PCA/LDA method have shown almost equal performance while the training time of the proposed method is much shorter than the other. This is because DCT has the fixed number of basis vectors while the property of energy compaction rate is similar to that of PCA. Although depending on the number of coefficients employed for the recognition, the experimental results show that the performance of the proposed method in terms of recognition rate is very comparable to PCA/LDA method and other DCT/LDA methods, and it can be trained 13,000 times faster than PCA/LDA method.

사운드를 심벌화한 광고 영상의 감각요소 연구

김형준,정진헌 한국디지털정책학회 2020 디지털융복합연구 Vol.18 No.7

사이버 멀미 증상의 개선을 위한 음원청취의 효과에 관한 탐색

김형준,조형석,박정순,김경래,김규범,민병찬 한국감성과학회 2019 춘계학술대회 Vol.2019 No.-

On April 5, 2019, 5G communication technology was commercialized in South Korea. It is expected that virtual environment technology will be used in various fields thanks to development of telecommunication technology. However, failure to address the problem of cyber motion sickness, a user side effect of virtual environment technology, will limit the activation and diversity of the technology's application areas. In previous studies, there were many ways to improve symptoms through visual environments and user movements. In this study, the results of a study were checked to see if the effects of symptom mitigation can be obtained by listening to a particular sound source of cyber motion sickness among users using a virtual environment.

플라즈마 용사코팅 특성 평가

김형준 대한용접접합학회 1999 대한용접·접합학회지 Vol.17 No.1

척수 손상으로 인한 발기부전의 평가를 위한 야간수면중발기검사

김형준,이범석,박철우,최수원,이숙희,김홍채,김승수 대한재활의학회 2008 Annals of Rehabilitation Medicine Vol.32 No.5

Objective: To evaluate erectile dysfunction in patients with spinal cord injury and the relationship between patient's subjective answers and the results of objective tests regarding erectile dysfunction. Method: Twenty-one male patients with erectile dysfunction after spinal cord injury were administered with nocturnal penile tumescense and rigidity testing (NPTR) using RigiscanⓇ over 2 consecutive nights. NPTR using RigiscanⓇ at second night was performed after oral administration of sildenafil 50 mg. Answer of the global efficacy question (GEQ) after oral administration of sildenafil 50 mg and the parameters of NPTR were compared.Results: After oral administration of sildenafil 50 mg, number and duration of erectile episodes, and duration of rigidity greater than 60% on NPTR improved significantly (p< 0.05). Sixteen out of seventeen patients (94.1%) who showed improved nocturnal erection after oral administration of sildenafil 50 mg answered that they had an improved erectile function after sildenafil. All four patients (100%) who showed no improvement in nocturnal erection after sildenafil answered that their erectile function was not improved after oral administration of sildenafil 50 mg.Conclusion: We expect NPTR using RigiscanⓇ might be useful for the evaluation of erectile dysfunction in men with spinal cord injury.