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A Novel Topic Extraction Method based on Bursts in Videos Streams
Kimiaki Shirahama,Kuniaki Uehara 보안공학연구지원센터 2008 International Journal of Hybrid Information Techno Vol.1 No.3
In this paper, we introduce a novel method for extracting “topics” as interesting events in a video. Here, we define the interestingness of an event by the anomaly of a target character’s appearance and disappearance pattern. As examples of abnormal patterns, shot durations in thrilling events are very short while shot durations in romantic events are very long. In contrast, as an example of non-abnormal pattern, conversation events are presented by the pattern, where the target character repeatedly appears in one shot and then another character appears in the next shot. From the above point of view, our topic extraction method aims to detect the following two types of abnormal patterns, called “bursts”. The first type of burst is a pattern where the target character appears in shots with very short durations, while the second is a pattern where he/she appears in shots with very long durations. To detect such bursts, we firstly divide the video into events characterized by specific patterns of the target character’s ppearance and disappearance. We locate these patterns in the video by using time series segmentation technique. Then, we extract topics by examining whether the pattern in each event can be regarded as a burst or not. Experiments on different videos validate that a character's ppearance and disappearance patterns are effective for obtaining semantically meaningful events. And, bursts are useful for extracting many interesting topics.
Kimiaki Abe 한국축산식품학회 2002 심포지움 및 학술발표회 Vol.- No.29
Acid dairy drinks(ADD) are a worldwide product existing in many variations: fruit milk drinks, yogurt drinks, soy milk, butter milk, whey drinks and kefir etc. These drinks are marketed with different shelf lives depending on processing: -Short shelf life(maximum 3 weeks, cold storage) - Long shelf life(2 to 9 months, pasteurized, sterilized or retorted) Acidic protein drinks tend to a separation or destabilization process in the absence of stabilizing system during the shelf life of the ADD. A phase separation results in sedimentation of large particles at the bottom of the package and/or the formation of a serum layer at the top(whey off). These beverages are usually composed of an acid dairy phase (fermented base)or a natural base(milk, soymilk etc.)with an acidic medium (fruit phase: pulp, fruit concentrate etc.) which can be flavored. Sugar and stabilizers are added. It has been proved since the late 1950 s that adding high methoxy pectin (HM pectin)to acid milk drinks is the best way to prevent the formation of a sediment and/or the whey off. In this presentation, we explain about stabilization mechanism of ADD induced by pectin. Applications and market trend of ADD in Asia and Europe are explained.
Saito, Kimiaki,Mikami, Satoshi,Andoh, Masaki,Matsuda, Norihiro,Kinase, Sakae,Tsuda, Shuichi,Sato, Tetsuro,Seki, Akiyuki,Sanada, Yukihisa,Wainwright-Murakami, Haruko,Yoshimura, Kazuya,Takemiya, Hiroshi The Korean Association for Radiation Protection 2019 방사선방어학회지 Vol.44 No.4
Massive environmental monitoring has been conducted continuously since the Fukushima Daiichi Nuclear Power accident in March of 2011 by different monitoring methods that have different features together with migration studies of radiocesium in diverse environments. These results have clarified the characteristics of radiological environments and their temporal change around the Fukushima site. At three months after the accident, multiple radionuclides including radiostrontium and plutonium were detected in many locations; and it was confirmed that radiocesium was most important from the viewpoint of long-term exposure. Radiation levels around the Fukushima site have decreased greatly over time. The decreasing trend was found to change variously according to local conditions. The air dose rates in environments related to human living have decreased faster than expected from radioactive decay by a factor of 2-3 on average; those in pure forest have decreased more closely to physical decay. The main causes of air dose rate reduction were judged to be radioactive decay, movement of radiocesium in vertical and horizontal directions, and decontamination. Land-use categories and human activities have significantly affected the reduction tendency. Difference in the air dose rate reduction trends can be explained qualitatively according to the knowledge obtained in radiocesium migration studies; whereas, the quantitative explanation for individual sites is an important future challenge. The ecological half-lives of air dose rates have been evaluated by several researchers, and a short-term half-life within 1 year was commonly observed in the studies. An empirical model for predicting air dose rate distribution was developed based on statistical analysis of an extensive car-borne survey dataset, which enabled the prediction with confidence intervals. Different types of contamination maps were integrated to better quantify the spatial data. The obtained data were used for extended studies such as for identifying the main reactor that caused the contamination of arbitrary regions and developing standard procedures for environmental measurement and sampling. Annual external exposure doses for residents who intended to return to their homes were estimated as within a few millisieverts. Different forms of environmental data and knowledge have been provided for wide spectrum of people. Diverse aspects of lessons learned from the Fukushima accident, including practical ones, must be passed on to future generations.
Changes of Superoxide Dismutase Activity in Tissues of Mice treated with Methylmercury
Ryoji, Tamamoto,Kimiaki, Sumino,Lee, Myeong Jin,Lee, Won Chang,Kim, Jin Suk 대한보건협회 1992 대한보건연구 Vol.18 No.2
메칠水銀(Methylmercury)을 經口投與한 마우스 組織內 SOD(superoxide dismutase)活性의 變化를 觀察한바, 腎臟內의 메칠水銀과 總水銀分布는 初回 및 再投與 모두에서 他臟器의 水準 보다 높았다(p<0 05). 그리고 腦, 肝 및 腎臟組織內의 SOD活性은 메칠水銀의 初回投與에서 減少됨을 보였으나, 實驗末期에는 實驗前의 水準으로 恢復되었다. 腦組織中의 SOD活性은 肝과 腎臟에서의 그것보다 메칠水銀의 量이 낮은 水準에서 抑制되고 있었다. (p<0.05) Methylmercury(MeHg) shows remarkable toxicity in the central nervous system. while the living systems have specific protective action reacted with enzymes like as quenching systems to peroxidation. The change of superoxide dismutase(SOD) activity was examined in tissues of mice treated with MeHg. Kidneys contained the higest concentration of MeHg and total mercury leves compared to those in other tissues after one or reapeted administration of MeHg. Activity of SOD in brain, liver and kidneys were decreased with an increase of mercurial concentrations at the first stage after MeHg administration but got back to normal levels at the end of experiment. The SOD activity in the brain was inhibited at comparatively lower leyels of MeHg than those in liver and kidneys(p<0.05).
Short-term redistribution of methylmercury by sulfur-containing compounds
Ryoji Yamamoto,Kimiaki Sumino,Katsutoshi Nakamae,Won Chang Lee(李元暢) 한국예방수의학회 1997 예방수의학회지 Vol.21 No.1
16가지의 황함유화합물을 마우스에 급여한 후에 메틸수은(MeHg)의 확산율를 평가하였다. N-2-Mercaptopropionylglycerine (Thiola)와 2,3-dimercaptosuccinic acid (DMSA)는 투여 3시간후에 모든 조직내에 메털수은의 잔류량을 감소시키는데 가장 효과가 있는 것으로 밝혀졌다. Thiota, DMSA 그리고 다른 황함유화합물들과 대조군들은 집락분석법 (集落分析法, cluster analysis)에 의하여 성공적으로 아말감화 되었고, 4가지의 변수에 따라서 4가지의 집락(cluster)로 구분되었다. 집락-I에 속하는 화합물 (D-cysteine과 그외의 것들)과 집락-Ⅲ에 속하는 화합물 (Thiola와 DMSA)은 혈액과 신장내의 메틸수은 농도를 감소시켰다. 집락-Ⅲ에 속하는 화합물 (L-cysteine과 그외의 것들)은 집락-Ⅱ에 속하는 화합물 (glutathione과 그외의 것들)의 효과에 비하여 혈액과 신장에서 각기 119%와 122%까지 메틸수은의 농도가 증가하였다. 모든 조직에서 메틸수은의 감소에 가장 큰 효과를 보인 화합물은 집락-Ⅳ에 속하는 화합물이었고, 그 다음은 집락-I에 속하는 화합물이었다. 메틸수은의 제거에 효과가 없는 화합물은 집락-Ⅱ와 집락-Ⅲ에 속하는 화합물이었다.
Triangular shaped type-2 fuzzy numbers: Application to type-2 fuzzy differential equations
Norihiro Someyama,Hiroaki Uesu,Kimiaki Shinkai,Shuya Kanagawa 원광대학교 기초자연과학연구소 2022 ANNALS OF FUZZY MATHEMATICS AND INFORMATICS Vol.24 No.1
It is generally difficult to compute the level cut sets of type-2 fuzzy sets, so type-2 fuzzy sets that are more naturally represented and whose level cut sets can be computed relatively easily are desired. Then, we introduce a new type-2 fuzzy number called Triangular Shaped Type-2 Fuzzy Number in this paper. Moreover, we study calculus for type-2 fuzzy-number-valued functions and solve the problem of a fuzzy differential equation whose initial value is this type-2 fuzzy number.