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Development of Wave Overtopping–Overflow Transition Model Based on Full-scale Experiments
Hajime Mase,Sooyoul Kim,Makoto Hasegawa,Jae-Hoon Jeong,윤종성 한국해양공학회 2020 韓國海洋工學會誌 Vol.34 No.2
When high waves and storm surge strike simultaneously, the characteristics of the fluid field change drastically from overtopping according to the wave runup height to overflow through a transition state that combines overtopping and overflows. However, an estimation model or evaluation method has not yet been established because there is not enough engineering data. This study developed a wave overtopping-overflow transition model based on a full-scale experiment involving wave overtopping and overflow transition, which appropriately reproduced the effect of waves or the temporal change in inundation flow. Using this model to perform a calculation for the wave overtopping and overflow transition process under typical circumstances, this study determined the wave runup height and features of the inundation flow under time series changes as an example.
PREDICTION MODELS OF RANDOM WAVE TRANSFORMATION IN SHALLOW WATER
Hajime Mase 한국해안해양공학회 1999 학술강연회 발표논문초록집 Vol.2 No.1
This paper summarizes and explains existing prediction models of random wave transformation in shallow water and a hybrid wave model which consists of a spectral wave model and a probabilistic bore-type energy dissipation model. The hybrid wave model was applied to predict the vertically and horizontally two-dimensional wave transformations in shallow water. The agreement between the various observations by laboratory and field experiments and the predictions by the hybrid wave model was satisfactorily good.
Impact of Air Pollution on Allergic Diseases
( Hajime Takizawa ) 대한내과학회 2011 The Korean Journal of Internal Medicine Vol.26 No.3
The incidence of allergic diseases in most industrialized countries has increased. Although the exact mechanisms behind this rapid increase in prevalence remain uncertain, a variety of air pollutants have been attracting attention as one causative factor. Epidemiological and toxicological research suggests a causative relationship between air pollution and the increased incidence of asthma, allergic rhinitis, and other allergic disorders. These include ozone, nitrogen dioxide and, especially particulate matter, produced by traffic-related and industrial activities. Strong epidemiological evidence supports a relationship between air pollution and the exacerbation of asthma and other respiratory diseases. Recent studies have suggested that air pollutants play a role in the development of asthma and allergies. Researchers have elucidated the mechanisms whereby these pollutants induce adverse effects; they appear to affect the balance between antioxidant pathways and airway inflammation. Gene polymorphisms involved in antioxidant pathways can modify responses to air pollution exposure. While the characterization and monitoring of pollutant components currently dictates pollution control policies, it will be necessary to identify susceptible subpopulations to target therapy/prevention of pollution-induced respiratory diseases.
Evaluating the Lexical Hypothesis about Otagai
( Hajime Hoji ) 경희대학교 언어연구소 2010 언어연구 Vol.27 No.1
Language Research 27(1), 65-119. This paper explores how the hypothetico-deductive method can be applied to research concerned with the properties of the language faculty by illustrating how it can be applied to the language-particular hypothesis that otagaiin Japanese is a local anaphor. The paper adopts Chomsky`s(1993)conception of the Computational System (hypothesized to be at the center of the language faculty) and considers informant judgments to be a major source of evidence for or against hypotheses about the Computational System. Given that informants` acceptability judgments can be affected by various non-grammatical factors, it is imperative, for the purpose of putting our hypotheses to rigorous test, that we have a reasonably reliable means to identify informant judgments as a likely reflection of properties of the Computational System (or properties of the language faculty that are directly related to the Computational System). The paper suggests a means to do so. I maintain that we are led to some version of it once we adopt the basic assumptions noted above, along with the research heuristic, explicitly advocated by K. Popper, that we should maximize our chances of learning from errors; cf. Popper 1963. The paper then examines, in accordance with the proposed method, the predictions made under the lexical hypothesis that otagai is a local anaphor and shows that the predictions are not borne out. If what underlies a local anaphor is closely related to "active functional categories" in the sense of Fukui 1986 and if, as suggested in Fukui 1986, the mental lexicon of speakers of Japanese lacks them altogether, this result is as expected. (University of Southern California)