상품전략 수립과 신상품 개발

이도준 대한인간공학회 2007 대한인간공학회 학술대회논문집 Vol.- No.-

양측 비폐색을 유발한 연구개 기원의 섬유혈관성 용종 1예

이도준,명나혜,김영훈,정영준 대한이비인후과학회 2010 대한이비인후과학회지 두경부외과학 Vol.53 No.2

Fibrovascular polyp (FVP) mostly occurs in the upper cervical esophagus, hypopharynx, and occasionally in the oropharynx. However, it occurs very rarely in the nasopharynx. FVP is a slow growing tumor which often fails to produce symptoms until it has achieved massive size. Symptoms are diverse, ranging from asymptomatic to obstructive asphyxia according to the size of mass. We have recently experienced a rare case of a 14-year-old boy who complained of bilateral nasal obstruction due to a mass originating from the nasopharyngeal surface of soft palate,which is pathologically a nonnasal lesion. It was diagnosed as FVP and was successfully managed using cold instruments under endoscopy. Korean J Otorhinolaryngol-Head Neck Surg 2010;53:112-5

전정기능 저하의 전정재활치료

이도준,서명환,이정구 대한평형의학회 2011 Research in Vestibular Science Vol.10 No.-

Vestibular rehabilitation therapy is an exercised-based approach to treat individuals with vestibular hypofunction. Vestibular hypofunction may not restore fully, but central compensation in combination with sensory substitution is thought to reduce impairment and vertiginous symptom. Vestibular rehabilitation therapy can improve the functional balance, stabilize the ocular reaction and decrease the disequilibrium. The m ajor m echanism of vestibular rehabilitation therapy is thought to be compensation, adaptation, and substitution. In this article we aimed to answer several questions related to vestibular rehabilitation therapy. The questions are; what is the evidence of vestibular rehabilitation therapy, what is the indication of vestibular rehabilitation therapy, otolithic dysfunction and vestibular rehabilitation therapy, how to rehabilitate the vesibulospinal reflex, the role of virtual reality in vestibular rehabilitation therapy, the role of medication in vestibular rehabilitation therapy, difference between self directed home exercise and supervised directed exercise, optimal duration of vestibular rehabilitation therapy, and the role of vestibular therapeutist in vestibular rehabilitation therapy.

사용자 선호 기반 음식 추천 시스템의 설계 및 구현

이도준(Dojun Lee),민인식(Insik Min),김재원(Jae-Won Kim),이준구(Junku Lee),신정훈(Junghoon Shin),이상준(Sangjun Lee) 한국정보과학회 2016 한국정보과학회 학술발표논문집 Vol.2016 No.12

시각 자극의 언어화에 의한 전역 선행성의 역전

민수정,이도준 한국인지과학회 2012 인지과학 Vol.23 No.3

감각적 경험을 언어로 기술하면 그 경험에 관한 감각적 기억이 저하되는데, 이러한 현상을 일컬어 언어 장막(verbal overshadowing) 효과라고 한다. Schooler(2002)[1]는 언어화로 인해 정보처리 방식이 전역적 처리에서 국지적 처리로 전환되기 때문에 언어 장막이 발생한다고 제안하였다. 본 연구에서는 이러한 정보처리의 전환이 실제로 일어나는가를 검증하고자 얼굴 자극에 대한 기억을 요구하고 이를 토대로 언어적 묘사를 한 직후에 전역 처리와 국지 처리를 비교할 수 있는 Navon 과제를 실시하였다. 얼굴 재인 과제에서는 참가자들에게 외워야 하는 얼굴을 제시한 후 그 얼굴에 대한 언어화를 요구하였으며, 얼굴 재인 과제를 수행한 직후에 Navon 과제를 수행하도록 하였다. 그 결과, 얼굴 재인 과제에서는 언어화를 한 묘사 집단에서 언어화를 하지 않은 통제 집단보다 낮은 재인률을 보이는 언어 장막 효과가 나타났다. Navon 과제에서는 통제 집단이 전역 수준의 정보가 국지 수준의 정보보다 우세하게 처리되는 전역 선행성(global precedence)을 보인 반면에, 묘사 집단은 전역 수준의 정보보다 국지 수준의 정보를 더 우세하게 처리하는 국지 선행성을 보였다. 이는 얼굴을 언어화함으로써 정보처리의 방식이 전역적인 방향에서 국지적인 방향으로 전환되고, 그 결과로서 얼굴에 대한 재인이 손상된 것임을 시사한다. ‘Verbal overshadowing’ refers to the phenomenon whereby the verbal reporting of a visual memory of a face interferes with subsequent visual recognition of that face. Schooler (2002)[1] suggested that verbalization causes a shift from a holistic/global processing orientation towards a more analytic/local processing orientation that is detrimental to face recognition. The present research investigated whether this processing shift occurs or not by assessing performance of Navon task following face recognition task, interposing verbalization between encoding stage and retrieval stage. The face recognition task showed the verbal overshadowing effect. In the Navon task, while non-verbalization group showed global precedence, verbalization group showed local precedence. This results imply that the cause of verbal overshadowing effect is a processing shift induced by verbalization.

생각회피 훈련을 통한 의도적 망각에서 항목 강도와 연합 강도의 효과

홍유림,이도준 한국인지및생물심리학회 2012 한국심리학회지 인지 및 생물 Vol.24 No.3

The present study hypothesized 1) that the forgetting effects would be greater for targets with strong item memory strength because the item to be forgotten is clear and easily accessed by cognitive control process, 2) the forgetting effects would be lesser for the cue-target pairs with strong associative memory strength because the effect of interference from other competitive stimuli associated with the cue is relatively smaller using think/no-think (TNT) paradigm demonstrated the facts that unwanted memory can be forgotten intentionally. In Experiment 1, target stimuli had either emotional or neutral content to adjust item memory strength of the target while cue-target pairs were distinguished based on the associative memory strength between cue and target words during a training phase. Results indicated an enhancing effect on the think condition and suppressing effect on the no-think condition following repeated practice given the target contained negative valence rather than neutral valence. In addition, greater suppression was observed when cue-target pairs contained weak associative memory strength. In Experiment 2, instead of targets, the valence of cues was changed to adjust the item memory strength of cue stimuli while maintaining the level of associative memory strength between cue-target pairs. The associative memory strength effect depending on the training level in the learning phase was almost the same as in Experiment 1, but there was no significant difference between valences of cues. The finding indicates that the item memory strength and the associative memory strength have opposite effects on intentional forgetting by the inhibition and interference mechanism respectively. 본 연구는 원하지 않는 기억의 인출을 인지적으로 억제할 수 있다는 사실을 실험적으로 증명한 생각/생각회피 패러다임(think/no-think paradigm)을 사용하여 1) 표적 항목의 기억 강도가 높을수록 인지적 억제가 촉진되어 망각이 잘 발생하고 2) 반면에 단서와 표적의 연합 강도가 높으면 간섭이 약화되어 망각이 덜 발생할 가능성을 검증하였다. 실험 1에서는 표적 항목의 기억 강도를 조작하기 위해 부정적이거나 중립적인 정서가를 가진 단어들을 사용하고, 사전 연합 학습 단계의 훈련 수준에 따라 단서와 표적 간 연합 강도의 세기를 구분하였다. 그 결과, 중성적인 표적에 비해 부정적인 표적에 대한 망각이 회피 조건에서 더 크게 발생하였다. 또한 표적이 사전 학습 단계에서 학습이 잘 되었을수록 망각이 덜 발생하였다. 실험 2에서는 표적 대신 단서의 정서가를 조작함으로써 단어쌍의 연합 강도를 실험 1과 같게 유지한 채 표적 항목의 기억 강도는 조건별 차이가 나지 않도록 하였다. 그 결과, 사전 학습의 효과는 재현되었지만 단서의 정서가는 표적의 망각에 영향을 끼치지 않았다. 이러한 결과는 항목 자체가 가지는 기억 강도와 항목들 간의 연합 강도가 각각 억제와 간섭을 통해 독립적으로 의도적 망각에 상반된 효과를 유발할 수 있음을 증명한다.

소아 심경부 감염의 임상적 고찰

문태현,이도준,박병건,이상준,정필상,Moon, Tae-Hyun,Lee, Do-Joon,Park, Byung-Kuhn,Lee, Sang-Joon,Chung, Phil-Sang 대한기관식도과학회 2010 大韓氣管食道科學會誌 Vol.16 No.2

Background: Pediatric deep neck infection can cause critical complications in that they are seldom able to verbalize symptoms or cooperate with physical examination. The objective of this study is to identify the clinical characteristics according to age. Material and Method: A retrospective study was performed on 26 cases with pediatric deep neck infection during 12 years. Patients were classified infancy group (1-7 yr, 19.2%), preschool age group (7-15 yr, 30.8%) and school age group (15 yr-, 50%). We analyzed the age, sex, sites of abscess, predisposing factors, symptoms and compared onset, hospital date, laboratory and outcomes at each group. Results: In pediatric patients with deep neck infection, the age distribution was 18 males (69.2%) and 8 females (30.8%), the mean age was 7.4 years. The most common infection site was the anterior cervical triangle and submandibular space (19.2%). The most commonly known associated preceding disease was upper viral infection (34.6%), but we could not find the preceding diseases in most of cases (50%). Neck swelling (69.2%) was the most frequent symptom. The mean age of patients who performed neck CT was 8.23 years and neck US was 2.75 years. The younger patients were preferred to perform the neck US than the neck CT (p=0.022). The mean time from disease onset to admission was 9 days in the infancy, 5.5 days in the preschool aged and 5 days in the school aged group. The surgical treatment was performed in 30.8% of school aged, 62.5% of preschool aged and 100% of infancy group. Surgical treatment was preferred to younger patients (p=0.026). Conclusion: Abscess sites, size, and antibiotics susceptibility and especially patient age should be carefully considered in treating pediatric deep neck infection.

시각적 단기기억 부담이 주의선택에 미치는 영향

이혁수,이도준 한국인지및생물심리학회 2023 한국심리학회지 인지 및 생물 Vol.35 No.1

Inconsistent evidence has been reported regarding the role of visual short-term memory (VSTM) load on attentional selection. Some studies demonstrated that maintaining large amount of information in VSTM enhanced attentional selection. Using similar experimental methods, however, others observed impaired attentional selection by VSTM load. Here, we attempted to replicate previous conflicting results and tested the role of VSTM load as a modulating factor on attentional selection. In Experiments 1~3, participants performed a flanker task while maintaining the colors and locations of visual objects in VSTM for change detection. Irrespective of stimulus configurations, condition orders, and memory set sizes, we failed to find evidence that VSTM load modulates flanker interference. By demonstrating that flanker interference did decrease by perceptual load in Experiment 4, we excluded the possibility that our current attentional selection measure might not be sensitive enough. Experiment 5 manipulated the spatial relationship between memory items and a flanker. When memory items and a flanker appeared on opposite sides of the center, flanker interference increased with VSTM load. When their positions were overlapped, however, flanker interference was not affected by VSTM load. In addition, individual difference analysis failed to find a reliable relationship between VSTM capacity estimates and flanker interference. The equivalence test showed that the modulating effects of VSTM load on flanker interference were only negligible. The current findings provide evidence against the assertion that VSTM load modulates attentional selection, and call for new models within which the dynamic relationships between working memory and visual selection are fully described and tested. 시각적 단기기억(visual short-term memory, VSTM)이 주의선택에 미치는 영향에 관해 선행연구들은 일관되지 않은 결과를 보고하였다. 일부 연구에서는 VSTM이 많은 정보를 유지하는 동안에 주의선택이 강화되었지만, 다른 연구에서는 비슷한 절차를 사용했음에도 불구하고 VSTM 부담이 주의선택을 약화시켰다. 이에, 본 연구는 재현실험을 통해 선행연구의 모순된 결과를 확인하고 주의선택의 조절 요인으로서 VSTM 부담의 역할을 검토하고자 하였다. 실험 1~3에서 참가자는 변화탐지를 위해 물체의 색과 위치를 VSTM에 유지하는 동안 플랭커 과제를 수행하였다. 그러나 자극 배열, 조건 순서, 기억항목 개수에 상관없이, VSTM 부담이 플랭커 간섭을 조절한다는 증거를 찾을 수 없었다. 실험 4는 플랭커 간섭을 감소시키는 지각부담 효과를 확인함으로써 실험 1~3의 주의선택 측정이 민감하지 않았을 가능성을 배재하였다. 실험 5는 VSTM 기억항목과 플랭커의 공간적 관계를 조작하였다. 그 결과, 기억항목과 플랭커가 서로 반대 화면에 제시되면 VSTM 부담에 의해 플랭커 간섭이 증가했지만, 두 자극의 위치가 중첩되면 VSTM 부담이 플랭커 간섭을 영향을 끼지지 않았다. 개인차 상관 분석에서 개인별 VSTM 용량과 플랭커 간섭 변화량은 의미있는 상관을 보이지 않았고, 동등성 검사는 VSTM 부담이 플랭커 간섭에 끼친 영향은 무시할만한 수준임을 확인하였다. 종합적으로 본 연구는 VSTM 부담이 주의선택을 조절한다는 주장에 대해 회의적인 증거를 제공하며, 작업기억과 시각적 주의의 다양한 관계를 기술할 수 있는 새로운 모델의 필요성을 제기한다.

경부 괴사성 근막염의 임상적 고찰

박병건,이도준,이상준,Park, Byung Kuhn,Lee, Do-Joon,Lee, Sang Joon 대한기관식도과학회 2011 大韓氣管食道科學會誌 Vol.17 No.1

Background and Objectives Cervical necrotizing fasciitis is a fulminant disease associated with necrosis of connective tissue, spread along the fascial plane, and high mortality. We analyzed the clinical characteristics and treatment outcome of this rare fatal disease. Materials and Methods We retrospectively reviewed the medical records of 19 patients treated for cervical necrotizing fasciitis from January 1999 to January 2009. Mean age was 53.7 years. Results The most common predisposing illness was tonsillitis (36.8%), followed by odontogenic infection (15.7%). Diabetes mellitus was most common underlying disease. Liver cirrhosis and chronic renal failure were found in 2 patients each. All patients were treated with combination of parenteral antibiotics and wide surgical debridement by transcervical and/or thoracotomy approach. Multiple surgical debridements were performed in 7 patients. Tracheotomy was performed in most of the patients (88.8%). Period of total hospitalization and Intensive care unit was 23 days and 10.1 days. Two patients died of disease and overall survival rate was 89.4%. Conclusion Early surgical management and care in intensive care unit are essential for cervical necrotizing fasciitis. Possible complications such as respiratory failure, mediastinitis or sepsis should be carefully evaluated.

폴리올레핀계 단성분 부직포 및 이성분 시스-코어 복합부직포의 열융착 거동에 관한 연구

최세진,이도준,이현석,김한성,Choi, Se Jin,Lee, Do Jun,Lee, Hyun Seok,Kim, Han Seong 한국섬유공학회 2017 한국섬유공학회지 Vol.54 No.2

In this study, we have investigated the difference between the thermal bonding behaviors of mono-component and sheath-core nonwoven fabrics used as hot-melt adhesives. The difference between the manufacturing processes and the melting points of the nonwoven fabrics lead to a difference in their thermal bonding behavior. This was confirmed through image analysis by observing the change in the thermal shrinkage and the pore size ratio with temperature. The difference in the behavior of the fibers is also explained by dynamic mechanical analysis. The analysis of the thermal bonding mechanism of the hot-melt nonwoven fabrics can be used as a supporting data for their manufacturing process in order to improve the performance of the hot-melt adhesives and the design adhesion strength.