[지역보도 부문/뉴스_제97회 이달의 방송기자상] 태풍 피해 키운 LH

최지호 (사)방송기자연합회 2017 방송기자 Vol.34 No.-

전파 네트워크 특성 추출을 통한 소셜 미디어 속 루머 분류

최지호,정시현,김종권 한국정보과학회 2020 정보과학회 컴퓨팅의 실제 논문지 Vol.26 No.2

Social media has become one of the most powerful mediums for information dissemination in modern society. However, it can cause great social impact if it facilitates the spread of rumors. Efforts to classify rumors and prevent the spread of false information are imperative because rumors can cause great damage in reality. In this paper, we proposed a method of training machine learning classifiers for rumor classification tasks by modeling the diffusion network from tracing rumors in social media. We extracted structural, temporal, and social characteristics from the diffusion network and used them as features to classify rumors. Based on the characteristics extracted from the real-world Twitter data, the study showed that the ensemble classifier had 69.3% accuracy and a 0.686 F1 score in network classification tasks with four labels: true rumors, false rumors, unverified messages, and non-rumors. 소셜 미디어는 현대 사회에서 강력한 정보 전달력을 가진 매체 중 하나로 이를 통해 루머(rumor)가 전파될 경우 큰 사회적 영향을 끼칠 수 있다. 소셜 미디어를 통해 확산된 루머는 때론 현실에 큰 피해를 야기하므로 루머를 분류하여 거짓 정보의 전파를 막는 노력은 중요시되고 있다. 본 논문에서는 소셜 미디어 속 루머의 자취(trace)를 이용하여 전파 네트워크(diffusion network)를 구성하고 이로부터 구조적(structural), 시간적(temporal), 사회적(social) 특성을 추출하여 루머 분류를 위한 기계학습 분류기 학습법을 제안한다. 실제 트위터 데이터에서 추출된 특성을 바탕으로 앙상블 분류기를 학습시킨 결과 진실인 루머, 거짓인 루머, 증명되지 않은 메시지, 루머가 아닌 메시지까지 4개의 레이블로 이루어진 네트워크 분류 문제에서 69.3% 이상의 정확도와 0.686 F1 점수의 성능을 확인하였다.

만성 신부전 환자의 후천성 천공성 피부증에 대한 연구

최지호,이미우,성경제,문기찬,고재경 대한피부과학회 2000 大韓皮膚科學會誌 Vol.38 No.9

Background: Acquired perforating dermatosis (APD) is a skin disorder occurring in patients with diabetes mellitus and/or chronic renal failure requiring dialysis. Objective : The purpose of this study was to clarify the clinical and histhopathological features of APD. Method: Twelve patients with APD who had biopsies done at Asan Medical Center were retrieved for this study. Clinical data and histopathologic specimens were reviewed. Results and Conclusion: 1. Sex ratio was 3:1 (9 male: 3 female) and mean age of onset was 52.1 years. 2. All patients had pruritic umbilicated papules with central keratotic plugs. The most predilection site was trunk. 3. Nine patients had an associated underlying non-insulin dependent diabetes mellitus 4. Skin lesions had developed on pre-dialysis in three patients, and after mean duration of 3.3 years on dialysis in remaining nine. 5. Histopathological examinations revealed the features of perforating folliculitis, Kyrle's disease or reactive perforating collagenosis. But we did not find any specimen resembling elastosis perforans serpiginosa. 6. It makes sense to designate the diseases as acquired perforating dermatosis rather than as one of the separate perforating diseases.

발아현미분을 첨가한 식빵의 품질 특성

최지호 한국조리과학회 2001 한국식품조리과학회지 Vol.17 No.4

본 연구에서는 발아현미의 자연식품으로써의 이용효과를 극대화 시켜 이를 이용한 기능성 식빵을 제조하기 위해 발아현미분을 첨가하여 식빵을 제조하고 부피, 무게를 측정하여 제빵 특성을 측정하였으며, 식빵의 성분변화를 살펴보기 위해 일반성분, 환원당, 아미노산, 무기질, 지방산 분석을 행하여 영양성분을 분석하고, 관능검사를 실시하였다. 발아된 현미분 첨가량 증가에 따른 제빵특성을 살펴보면, 대조구에 비하여 현미분 10∼30% 첨가 식빵의 경우 완만하게 부피가 감소하였고, 40% 첨가구는 75.48%, 50% 첨가구는 66.29%로 감소하여 빵의 외형이 허물어지는 결과를 보였으며, 현미분양의 증가에 따른 식빵 무게의 큰 변화는 찾아볼 수 없었고, 발아 현미분의 첨가량은 30%정도까지가 적정한 제빵특성을 나타내는 것을 알 수 있었다. 일반성분, 구성 아미노산 함량의 변화는 발아현미분의 첨가량이 중가함에 따라 회분, 단백질, 지방, 환원당, 섬유소 및 구성 아미노산의 함량이 계속적으로 증가하였으나, 무기질, 지방산 함량은 대조군과 비교하여 큰 차이가 없었다. 발아현미분을 혼합하여 제조한 빵의 관능적인 성질은 발아현미분의 첨가량이 많을수록 대조군에 비하여 색, 외관, texture, 입안에서의 느낌에 대한 기호도는 약간 낮았으나, 씹을수록 느껴지는 고소한 맛과 향이 대조군에 비해 좋은 특성을 나타내어 빵에 대한 전체적인 선호도는 발아현미분 첨가량이 많을수록 더 높았다. Breads were prepared with the addition of sprouted brown rice flour(SBRF) as a funtional ingredient up to 50%, and their quality characteristics ware evaluated through analyses of proximate compositon, amino acid by HPLC, fatty acid by GC, and sensory evaluation. The optimum amount of SBRF for bread preparation was 30%(w/w). The more SBRF was added, the greater the proximate components such as ash, crude protein, crude fat, fiber and amino acid content were, although the baking quality such as volume decreased. The results of sensory evaluation for bread showed that the more SBRF was added, the lower the scores of color, appearence, texture and the feelings in the mouth were, but the higher the score of taste.

Cyclosporine in psoriasis (초)

최지호 대한피부과학회 2009 초록집 Vol.47 No.10

중국시장에서 비즈니스 Guanxi와 장기지향성간의 관계 -환경 불확실성의 조절효과-

최지호,문연희,김용철,이승희 한국기업경영학회 2010 기업경영연구 Vol.17 No.2

In the past three decades, many scholars have assessed the implications of the macroenvironment for microdyadic channel structures and processes using the political economy framework. Marketing channels literature predominantly has used an efficiency-based task environment perspective and largely overlooked a legitimacy-based institutional environment approach in studying channel attitudes, behaviors, processes, and structures. The purpose of this article is to highlight the importance of the institutional environment and test the moderating role of the institutional environment between guanxi and relationship quality such as opportunistic behavior and long-term orientation in Chinese market. The data used to test the model were collected in a direct interview survey of firms in various indus- tries. Using hierarchical regression analysis, we assess the effects of guanxi on relationship quality and the moderating effects of institutional environment. The results show that guanxi significantly affects long-term orientation but is not significantly related to opportunistic behavior. We find that the institutional environment moderates the relationship between guanxi and long-term orientation. The article ends by suggesting managerial implications and the directions of future research. 정치-경제적 틀에 기초하여 채널 구조나 과정을 거시적인 외부 경제적 환경과 연결시키는 연구가 진행되어 온 반면에 상대적으로 제도나 법과 같은 외부 정치적 환경 요인은 관심을 받지 못해왔다. 본 연구에서는 중국시장에서 기업 간 관계마케팅의 핵심 개념이라 할 수 있는 꽌시가 기회주의적 행동이나 장기지향성에 미치는 효과와 더불어 제도적 환경에 의해 어떻게 조절되는가를 실증하는데 목적이 있다. 중국시장에서 외국기업과 거래하고 있는 86개의 기업을 대상으로 수집된 자료가 분석에 이용되었다. 계층적 회귀분석을 통해 분석된 결과, 꽌시는 장기지향성에 긍정적인 영향을 미치고 있는 것으로 나타났으며, 이러한 효과는 제도적 환경에 의해 감소하는 결과를 보여주었다. 꽌시가 기회주의적 행동에 미치는 주효과와 제도적 환경과의 상호작용 효과 모두 유의하지 않았으며, 제도적 환경의 주효과만 유의한 것으로 나타났다. 마지막으로 채널 마케팅에서 이 연구가 지니고 있는 시사점과 향후연구가 제시되었다

기능성 미역 국수가 SD 계 흰쥐의 비만 억제작용에 미치는 영향

최지호,김동우,김정화,김대익,이종수,백영호,김창목 한국생명과학회 1998 한국생명과학회 학술발표회 Vol.20 No.-

Our previous studies have demonstrated the biological effects of alginic acid as a brown algae (Undaria pinnatifida) component on inhibitory action of obesity using animal model. This study was designed to investigate the effect of functional brown algae (FBA)-noodles (10%, 20% and 40%) on inhibitory action of obesity in Sprague-Dawley (SD) male rats for 4 weeks. Body weight gain in SD-rats for 4 weeks resulted in a marked inhibition (7%,17%,38%, respectively) by administration of 10%, 20% and 40% FBA-noodles compared with control group. Total energy intake and feed efficiency in SD rats for 4 weeks resulted in a marked inhibition (6%, 16%, 37% and 10%, 20%, 40%, respectively) by administration of 10%, 20% and 40% FBA-noodles compared with control group, but gross efficiency was not observed in these FBA-noodle groups. Rohrer index and TM index as a obesity markers in SD-rats for 4 weeks significantly decreased(10%, 15% and 22%, respectively) by administration of 10%, 20% and 40% FBA-noodles compared with control group. These results suggest that inhibitory effect of obesity in SD-rats for 4 weeks may be due to decreases of body fat content resulted in a decreases of feed efficiency and enegy intake by these FBA-noodles.

Cyclosporine in psoriasis

최지호 대한피부과학회 2009 대한피부과학회 학술발표대회집 Vol.61 No.1

Palatal Implants for Persistent Snoring and Mild Obstructive Sleep Apnea After Laser-Assisted Uvulopalatoplasty

최지호,김은중,김강우,주영호,박의현,이승훈 대한이비인후과학회 2014 Clinical and Experimental Otorhinolaryngology Vol.7 No.1

Laser-assisted uvulopalatoplasty (LAUP) was widely performed in 1990s as a surgical therapeutic procedure to improve snor- ing or mild obstructive sleep apnea (OSA). However, LAUP is not currently recommended as a treatment for OSA because the evidence for its efficacy is insufficient. Little is known about alternative minimally invasive surgery in patients who refuse continuous positive airway pressure or oral appliance after failed LAUP. We present a case of successful surgical treatment of persistent snoring and mild OSA with palatal implants after LAUP. This case suggests that palatal implants may be offered as an alternative surgical procedure for selective patients with persistent or recurrent snoring or mild OSA after LAUP.

병리 조직소견 상 많은 수의 진균요소를 보인 고정피부형 스포로트리쿰증 1예

최지호,성경제,문기찬,고재경,이원신,김은성,김덕희,장성은 대한피부과학회 2002 大韓皮膚科學會誌 Vol.40 No.2

We report a case of fixed cutaneous type sporotrichosis with atypical histopathologic findings in a 18-year-old male patient, who presented with a 1-year history of a 4×3 cm sized, crusted, erythematous plaque and several small erythematous papules on the left knee. The histopathologic findings showed pseudoepitheliomatous hyperplasia, abscess formation, chronic granulomatous inflammation and many PAS-positive fungal spores and hyphae in the dermis. Sporothrix schenckii was identified with fungal culture of biopsy specimen. The lesions improved with three pulses of itraconazole 400㎎ daily for a week per month.