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황지호(Jiho Hwang),차승표(Seungpyo Cha),김영철(Young Chol Kim) 대한전기학회 2018 전기학회논문지 Vol.67 No.8
This paper presents a simple identification method for discrete-time low-order model of unknown delay process from pulse response. The key idea is to find the parameters of the model such that the first N moments of the unknown process and the model are equal. We first show that the k-th moment of a process can be determined by the moments of the input and output. The parameters and delay are estimated separately. It is shown that for a given delay, the parameters of the low-order model can be determined by solving linear equations in a matrix form. Delay of the model is estimated such that the integral of the absolute errors (IAE) of the candidate models with possible delays minimizes. The illustrative example shows that the proposed method can directly identify low-order models without order reduction process from a single pulse response.
황지호(Hwang Jiho),장은수(Jang Eunsu),유종향(Yoo Jonghyang),이시우(Lee Siwoo) 한국한의학연구원 2008 한국한의학연구원논문집 Vol.14 No.2
Objective: The purpose of this study is to examine the characteristics and the improvement in the symptoms of the patients who showed improvement after the administration of Yeoldahanso-tang and Cheongpyesagan-tang. Methods : The patients whose Sasang Constitution were examined by an expert at six Oriental medical hospitals and three regional Oriental-medicine clinics, 89 showed a predetermined symptom improvement when Yeoldahanso-tang and Cheongpysagan-tang were administered to them from November 2007 to July 2008. The traits of the patients and the effects of their treatment were examined. Results and Conclusions : 1. There were about as many male patients as there were female patients, but 21.3% of the patients who were female and who were in their 40's showed the most improvement, which makes them the biggest category in this study. 2. The main syndromes in which the patients showed improvement were hemi-paralysis, vertigo, and headache, and the ordinary symptoms in which the patients showed improvement were diarrhea, fatigue, and dry mouth. 3. The average food intake of the patients was highest and their feces had intermediate hardness (semi-soft). 4. The amount of the patients' sweat was either high (38.2%) or appropriate (38.2%) and they showed a dislike of heat over coldness. 5. Among the diseases that the patients previously had, high blood pressure. The above results show that Yeoldahanso-tang and Cheongpyesagan-tang can be considered beneficial to females in their 40's and to stroke patients whose food intake is normal, whose sweat level is either copious or appropriate, who dislike heat and who are suffering from high blood pressure.