• Title/Summary/Keyword: HP

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A data-adaptive maximum penalized likelihood estimation for the generalized extreme value distribution

  • Lee, Youngsaeng;Shin, Yonggwan;Park, Jeong-Soo
    • Communications for Statistical Applications and Methods
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    • v.24 no.5
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    • pp.493-505
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    • 2017
  • Maximum likelihood estimation (MLE) of the generalized extreme value distribution (GEVD) is known to sometimes over-estimate the positive value of the shape parameter for the small sample size. The maximum penalized likelihood estimation (MPLE) with Beta penalty function was proposed by some researchers to overcome this problem. But the determination of the hyperparameters (HP) in Beta penalty function is still an issue. This paper presents some data adaptive methods to select the HP of Beta penalty function in the MPLE framework. The idea is to let the data tell us what HP to use. For given data, the optimal HP is obtained from the minimum distance between the MLE and MPLE. A bootstrap-based method is also proposed. These methods are compared with existing approaches. The performance evaluation experiments for GEVD by Monte Carlo simulation show that the proposed methods work well for bias and mean squared error. The methods are applied to Blackstone river data and Korean heavy rainfall data to show better performance over MLE, the method of L-moments estimator, and existing MPLEs.

Skin Permeation and Crosslinking with Biological Tissue of the Hydrolyzed Products of Gardeniae Fructus Extract (치자엑스 가수분해물 제제의 피부투과 및 생체 피부조직과의 교차결합에 관한 연구)

  • Yang, Jae-Heon;Lee, Nam-Hee
    • Journal of Pharmaceutical Investigation
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    • v.35 no.1
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    • pp.7-16
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    • 2005
  • Gardeniae Fructus is consisted of geniposide and it's derivatives. For the purpose of treatment of skin disease, geniposide and hydrolyzed products (HP) of Gardeniae Fructus were studied on skin permeation and cross1inking with biological tissue. The hydrolyzed products (HP) and active ingredients of Gardeniae Fructus were identified and investigated about skin permeability. Genipin has provided low cytotoxic cross1inking reagents and formed stable and biocompatible crosslinked products. The permeation enhancing effects of geniposide and genipin under the hydrolyzed products of cream and hydrogel preparations were tested using Franz type diffusion cell and the skin of hairless mouse. The remaining proportions of geniposide and genipin were measured in the hydrolyzed products of cream and hydrogel preparations. The crosslinking of epidermic and endodermic tissue with genipin under the hydrolyzed prodcuts of cream and hydrogel preparation was observed using light microscopy. Increased absorption ratio of the skin of hairless mouse about genipin was higher than that of geniposide. Loads at break, tensile strengths and skin permeation rate of the hydrolyzed products (HP) of cream and hydrogel preparations were higher than the nonhydrolyzed products (NHP). The hydrolyzed products (HP) of cream and hydrogel of Gardeniae Fructus Extracts were proper preparations and crosslinking agents to increase the transdermal absorption with epidermic and endodermic tissue.

hp-Version of the Finite Element Analysis for Reissner-Mindlin Plates (Reissner-Mindlin 평판의 hp-Version 유한요소해석)

  • Woo, Kwang Sung;Lee, Gee Doug;Ko, Man Gi
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.13 no.2
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    • pp.151-160
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    • 1993
  • This paper is concerned with formulations of the hierarchical $C^{\circ}$-plate element on the basis of Reissner-Mindlin plate theory. On reason for the development of the aforementioned element based on Integrals of Legendre shape functions is that it is still difficult to construct elements based on h-version concepts which are accurate and stable against the shear locking effects. An adaptive mesh refinement and selective p-distribution of the polynomial degree using hp-version of the finite element method are proposed to verify the superior convergence and algorithmic efficiency with the help of the simply supported L-shaped plate problems.

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The Effects of Hyangsapyeongwisan on Gastric Mucosal Lesions Induced by Indomethacin (Indomethacin으로 유발된 생쥐의 위 점막 손상에 대한 향사평위산(香砂平胃散)의 보호 효과)

  • Choi, Heung-Min;Lim, Seong-Woo
    • The Journal of Internal Korean Medicine
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    • v.25 no.3
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    • pp.518-528
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    • 2004
  • This study was carried out to investigate the effects of Hyangsapyeongwisan(HP) on gastric mucosal lesions induced by indomethacin in mice. The control group consisted of gastro-inflammation elicited mice. The sample group consisted of mice given HP after onset of gastro-inflammation. In common morphological and histochemical change, various cell abnormalities were observed in the control group, such as mucous surface cell, peanut cell, surface epithelial cell, goblet cell abnormalities, all caused hemorrhagic erosion. The sample group was the same as the control group. In the immunohistochemical change, the distributions of COX-I, BrdU treated with HP were notably higher than those of the control group(p$NF-{\kappa}B$, COX-2, PKC, IL-12B in mice treated with HP were notably lower than those of the control group(p

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Heat Production and Thermoregulatory Responses of Sheep Fed Different Roughage Proportion Diets and Intake Levels When Exposed to a High Ambient Temperature

  • Sudarman, A.;Ito, T.
    • Asian-Australasian Journal of Animal Sciences
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    • v.13 no.5
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    • pp.625-629
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    • 2000
  • Six yearling Suffolk ewes were used to study the effect of different roughage proportion diets (30%=LR, and 70%=HR) and intake levels (0.7 M and 1.3 M) on heat production and thermoregulatory responses in sheep exposed to different ambient temperatures (20 and $30^{\circ}C$). Sheep fed HR had higher heat production (HP) and time spent eating (TSE) and lower time spent standing (TSS) than those fed LR. But effect of roughage proportion on vaginal temperature (Tv) was obvious only at high intake and at $30^{\circ}C$. Sheep fed high intake had higher Tv, HP, TSS, and TSE than those fed low intake. Roughage proportion and intake level did not have an effect on respiration rate (RR), but ambient temperature did. Ambient temperature did not have an effect on HP, TSS and TSE. At $30^{\circ}C$ sheep had higher Tv and RR than those at $20^{\circ}C$. There were interactions between intake level and ambient temperature in TSS, between intake level and roughage proportion in TSE, and between roughage proportion and ambient temperature in HP. Results indicate that high roughage diet imposes a greater potential heat load on animals than low roughage diet when given at high ambient temperature, but not at low ambient temperature. And the effects is more pronounced at high intake.

Effect of Dialysis and Perfusion on Phosphamidon in vitro (투석 및 관류에 의한 살충제 포스파미돈의 제거 효율)

  • Hong Sae Yong;Gil Hyo Wook;Yang Jong Oh;Lee Eun Young
    • Journal of The Korean Society of Clinical Toxicology
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    • v.3 no.1
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    • pp.17-21
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    • 2005
  • Purfose: This study was to observe the phosphamidon reduction rate after haemoperfusion (HP) and Hemodialysis (HD) in vitro. Methods: We started off by measuring the clearance of HD and HP for the phosphamidon in vitro. Phosphamidon was measured hourly by High-pressure liquid chromatography. Results: Phosphamidon clearance was effectiveness in HP and HD. Phosphamidon reduction rate was no difference between HD and HP; $64\%$ versus $91.\%1$ at starting, $82.2\%$ versus $80.2\%$ at 1 hours, $82.2\%$ versus $73.8\%$ at 2 hours, $34.4\%$ versus $14.0\%$ at 3 hours, $14.1\%$ versus $27.4\%$ at 4 hours, $0\%$ versus $3.3\%$ at 5 hours. Conculsion: Extracorporeal elimination of phosphamidon is effective by hemoperfusio and hemodialysis in vitro. We suggest hemoperfusion may be effective in organophsphate intoxication patients.

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A Validation Study of the Korean Version of the Jefferson Empathy Scale for Health Professionals for Korean Nurses (한국판 의료인용 제퍼슨 공감측정도구의 간호사 대상 타당화 연구)

  • Ryu, Hye-Ran;Bang, Kyung-Sook
    • Journal of Korean Academy of Nursing
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    • v.46 no.2
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    • pp.207-214
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    • 2016
  • Purpose: To validate the Korean Version of the Jefferson Empathy Scale for Health professionals (K-JSE-HP) in a sample of Korean nurses. Methods: Internal consistency reliability, construct and criterion validity were calculated using SPSS (22.0) and AMOS (22.0). Data were collected from 253 nurses (230 women, 23 men) working at one university hospital in Seoul, South Korea. Results: The Korean version of JSE-HP showed reliable internal consistency with Cronbach's alpha for the total scale of .89, and .74~.84 for subscales. The model of three subscales for the K-JSE-HP was validated by confirmatory factor analysis (${\chi}^2=864.60$, Q=6.55, p<.001, CFI=.94, NNFI=.92). Criterion validity compared to the Interpersonal Reaction Index (IRI) showed significant correlation. Conclusion: The findings of this study demonstrate that the Korean JSE-HP shows satisfactory construct and criterion validity and reliability. It is a useful tool to measure Korean nurses' empathy.

Opitimization of culture conditions involved in dissolved oxygen for production of pullulan by Aureosidium pullulan

  • Seo, Hyeong-Pil;Son, Chang-U;Lee, Yu-Jeong;Kim, Seong-Gu;Kaplan, David L.;Lee, Jin-U
    • 한국생물공학회:학술대회논문집
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    • 2002.04a
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    • pp.173-176
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    • 2002
  • Effect of carbon source and culture conditions involved in the concentration of dissolved oxygen on cell growth and the production of pullulan by A. pullulans HP2001 were investigated. Among those carbon sources, glucose was found to be the best carbon source for the production of pullulan by A. pullulans HP2001. Maximal production of pullulan by A. pullulans HP2001 was 26.6 g/ f when concentrations of glucose and yeast extract were 8% (w/v) and 0.25% (w/v), respectively. It was found that aeration rate, agitation speed and inner pressure of a bioreactor, which were some of physiological factors involved in the dissolved oxygen in the medium may affect cell growth and the production of pullulan by A. pullulans HP2001.

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Anti-inflammatory Effect of Herbal Complex HP-04 on Degenerative Osteoarthritis (해동피를 포함한 생약복합제제 HP-04의 퇴행성 골관절염에 대한 항염효과)

  • Jo, Hyoung-Kwon;Kim, Dae-Sung;Kim, Jung-Young;Park, Young-Mi;Shin, Dong-Yeop;Lee, Hak-Yong;Kim, Hoon;Lee, Dong-Sung;Cho, Seong-Wan
    • Korean Journal of Pharmacognosy
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    • v.51 no.2
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    • pp.122-130
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    • 2020
  • To investigate the anti-inflammatory effect on Degenerative Osteoarthritis, Male sprague-Dawley rats were randomized and classified into three different concentration groups. We measured weekly weight change, dietary intake, drinking water intake, blood analysis like TNF-α (tumor necrosis factor-α), IL-6 (interleukin 6), TIMP-1 (tissue inhibitor of metalloprotease-1), MMP-2 (matrix metalloprotease-2), MMP-9 (matrix metalloprotease-9) and micro CT analysis. The results suggest that the treatment with herbal complex HP-04 improved the Monosodium iodoacetate (MIA) induced degenerative osteoarthritis and it could be applicable for the improvement of arthritic symptoms as a new therapeutic agent.

The Possibility of Avian Influenza Virus Infection in Human (가금인플루엔자 바이러스의 인체 감염 가능성)

  • 모인필;하봉도;송창선;김재홍
    • Korean Journal of Poultry Science
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    • v.31 no.2
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    • pp.109-118
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    • 2004
  • Avian influenza(AI) is an epizootic disease of variable severity caused by type A influenza viruses of the orthomyxovirus group. Chickens were the most frequently affected avian species with AI viruses. There were many outbreaks of fowl plague, now known as highly pathogenic AI(HP AI), throughout the world since Perroncito described the fowl plague in 1978 in Italy. In recent years HPAI viruses of different serotypes such as H5, H7 and H9 has been isolated from humans on several occasions either related with outbreak of HPAI in birds or not. In 1997, one of the most noteworthy events in AI history was the human mortality with H5N1 HPAI virus infection in Hong Kong. Six persons of total 18 persons with clinical signs of influenza were died. Recently the human cases with mortality related with HP AI outbreaks in poultry industry has been increased such as outbreaks of HP AI throughout Asia countries including Korea, Japan, China, Vietnam, Thailand and others in 2003. Although these outbreaks revealed the capable of spreading from birds to human, the capability for transmission between people was not clear. Therefore, this report will review the possibility of HP AI infection in human associated with HPAI outbreak in poultry industry.