진공청소기용 팬 모터의 비정상 유동 해석 및 공력소음 해석

김재열,심재기,송경석,오성민,양동조,김우진 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

The vacuum cleaner motor runs on very high speed for the suction power. Specially, the motive power is provided by the impeller being rotate on very high speed. And centrifugal fan consists of the impeller, the diffuser, and the circular casing. Due to the high rotating speed of the impeller and small gap distance between the impeller and diffuser, the centrifugal fan makes very high noise level at BPF and harmonic frequencies. In order to calculate the sound pressure of centrifugal fan, the unsteady flow data is needed. And Noise cause is dividing to fluid noise by exhaust flow of fan and vibration noise by rotational vibration of vacuum cleaner fan motor. Until now, measuring method has been used to measure vibration by the accelerometer; this method has been not measured for the vibration in some parts of brush and commutator because of motor construction and 3-D vibrating mode. This paper was purposed on the accurate analysis, using laser vibration analyzer, By using this measured data of noise cause against the difficult part in old times, we would like to use for the design of silent fan motor.

가족 내 사회적 자본을 통한 학부모의 교육열 탐구

안우환,김경식 경북대학교사범대학부속 중등교육연구소 2005 중등교육연구 Vol.53 No.1

이 글에서는 Coleman(1988)이 개념화한 사회적 자본의 개념을 통해 우리 나라 학부모의 교육열을 탐색해 보고자 하였다. 학부모-자녀간의 신뢰(trust), 사회 망(social network), 기대 및 규범(norms)이라는 세 가지 관점에 따라서 학부모의 교육열을 분석하였다. 연구결과 학부모-자녀 간에 바람직한 신뢰 관계 형성이 필요하며, 계층에 따른 교육양상에서 학부모들의 자녀 교육 지원에 대한 사회 망은 철저하리 만큼 계층간에 서로 배제적이고, 차별적인 경향이 형성되는 것을 엿볼 수 있다. 학부모의 자녀에 대한 기대와 규범이 자녀의 실제 학업성취에 긍정적 영향을 주기도 하지만, 전혀 영향을 주지 않거나 오히려 부정적인 영향을 줄 수도 있다는 것을 알 수 있다. 그리하여, 한국 사회의 교육열 정상화를 위하여 몇 가지 제언을 제시하였다. 이를 통하여 사회적 자본 개념이 한국 사회의 교육열 현상을 분석하는데 유용한 하나의 이론적 개념 틀(frame of reference)로서 자리 매김 하기를 바래본다. The purpose of this study was to analyze the parent's education fever by social capital in family. In order to see the parent's education fever, Coleman's social capital concept(trust, social network, and norms) was accepted. Social capital is measured by the density of the interaction among parents, children and school. Within the family, social capital is measured by the amount of positive parent-child interaction. Social capital model clearly provides a powerful explanation for social capital's effect on the parent's education fever. From the results of education fever study, the followings were proposed; First, parents' education fever needs not to be instrumental education fever for success but intrinsic education fever for all-round personality. Second, parents' education fever needs to be changed from selfish education fever for only my children welfare to altruist education fever for all man. Third, the structure of education which widely dispersed competing system needs to be changed. The tracking system in middle school level needs to be necessary. Fourth, in order to reduce the waste of education, it is necessary that the gap of compensation between winner and loser needs to be gradually decreased. In competing system, the fair rule which was accepted by all should be considered.

초등학생을 대상으로 한 사상인 외형과 식습관의 설문분석

고우석,김경수,고병희,이의주,Ko, Wo-Suk,Kim, Kyung-Soo,Ko, Byung-Hee,Lee, Eui-Ju 사상체질의학회 2007 사상체질의학회지 Vol.19 No.1

1. Objectives The purpose of this study is to find out the characteristics about the Sasang Constitution of elementary school students based on the questions that have significant differences. 2. Methods 146 children who have visited Kang-Nam Kyung-Hee Oriental Hospital Sasang Constitution center from Mar. 2003 to May. 2005, were investigated through the questionnaires. These have the categories of 'Diseases and Symptoms', 'Physical characteristics', 'Eating Habit', and etc., were analyzed statistically. 3. Results (1) There are no specific questions that have significant differences about the diseases and symptoms according to the Sasang constitution. (2) In the category of the 'Physical Characteristics', significantly more Soeumin and Soyangin showed positive answer to the question, 'Thin in some degree' than Taeumin, and significantly more Taeumin showed positive answer to the question, 'Fat in some degree' than the other groups, and significantly more Taeumin showed positive answer to the question, 'Bulging belly' than the Soeumin. (3) In the category of 'Eating Habit', significantly more Soeumin, Soyangin answered positively to 'eating little food(light eating)' than Taeumin, and more Taeumin showed positive answer to 'a lot of food uptake' than the other groups, and significantly more Soeumin to 'eating slowly' than Taeumin, in contrast, significantly more Taeumin showed positive answer to 'eating food in haste and hurry' than the Soeumin, and significantly more Soeumin showed positive answer to the question, 'unwillingness to eat vegetable' than Soyangin, and significantly more Soeumin showed that to the question, 'unbalanced diet' than the other groups, significantly more Taeumin showed positive answer to 'preference for fatty food' than the other groups.

삶의 질 향상과 지속가능한 지역경쟁력 : 호순환 관계의 모색

장지상,이성진,조정재,권우현,김애경 慶北大學校 1997 經商論集 Vol.25 No.1

초등학생을 대상으로 한 사상인 성격의 설문분석

고우석,김경수,고병희,이의주,Ko, Wo-Suk,Kim, Kyung-Soo,Ko, Byung-Hee,Lee, Eui-Ju 사상체질의학회 2006 사상체질의학회지 Vol.18 No.1

1. Objectives The purpose of this study is to find out the characteristics about the Sasang constitution of elementary school students based on the questions that have significant differences. 2. Methods 146 children who have visited Kang-Nam Kyung-Hee Oriental Hospital Sasang constitution center from Mar. 2003 to May. 2005, were investigated through the questionnaires. These have the categories of personality and emotional characteristics, personal relationship, playing and the way to handle things such as jobs or missions, behavioral characteristics, and etc., were analyzed statistically. 3. Results and Conclusions (1) In the category of the 'Personality and Emotional characteristics', significantly more Soeumin showed positive answers to the question, 'being easily nervous and get irritated' than the other groups, and significantly more Taeumin to the question, 'considerate and thoughtful' than Soyangin. (2) In the category of the 'Personal relationship', there were significantly more Soyangin who showed positive answer to the question 'making a friend easily' than the other groups. (3) In the category of the 'playing and the way to handle things', significantly more Soeumin showed positive answer to the question, 'love to do the exercise' than Soyangin, and significantly more Soeumin showed positive answer to the question, 'not careful and meticulous' than Soyangin, and significantly more Soeumin showed positive answer to the question, 'like to read books' than Taeumin. (4) In the category of the 'Behavioral characteristics', significantly more Soyangin showed positive answer to the question, 'unable to concentrate just one thing even for just a minute and keep on moving.' than the other groups, and significantly more Soyangin showed positive answer to the question, 'act or response quick.' than Taeumin, and significantly more Soyangin showed positive answer to the question, 'behave and go around restlessly and flighty' than Soeumin, and significantly more Taeumin showed the positive answer to the question, 'hate to move by oneself' than Soyangin.

Atomistic Assessments of Lithium-Ion Conduction Behavior in Glass-Ceramic Lithium Thiophosphates

Kim, Ji-Su,Jung, Wo Dum,Son, Ji-Won,Lee, Jong-Ho,Kim, Byung-Kook,Chung, Kyung-Yoon,Jung, Hun-Gi,Kim, Hyoungchul American Chemical Society 2019 ACS APPLIED MATERIALS & INTERFACES Vol.11 No.1

<P>We determined the interatomic potentials of the Li-[PS<SUB>4</SUB><SUP>3-</SUP>] building block in (Li<SUB>2</SUB>S)<SUB>0.75</SUB>(P<SUB>2</SUB>S<SUB>5</SUB>)<SUB>0.25</SUB> (LPS) and predicted the Li-ion conductivity (σ<SUB>Li</SUB>) of glass-ceramic LPS from molecular dynamics. The Li-ion conduction characteristics in the crystalline/interfacial/glassy structure were decomposed by considering the structural ordering differences. The superior σ<SUB>Li</SUB> of the glassy LPS could be attributed to the fact that ∼40% of its structure consists of the short-ranged cubic S-sublattice instead of the hexagonally close-packed γ-phase. This glassy LPS has a σ<SUB>Li</SUB> of 4.08 × 10<SUP>-1</SUP> mS cm<SUP>-1</SUP>, an improvement of ∼100 times relative to that of the γ-phase, which is in agreement with the experiments.</P> [FIG OMISSION]</BR>

Effects of Ranolazine on Norepinephrine-Induced Cell Death by Inhibition of the β-adrenoceptor Signal Pathway in Cardiomyocytes

( Kyung Eun Kim ),( Hee Sang Song ),( Hye Jung Kim ),( Min Ji Cha ),( Byeong Wook Song ),( Eun Ju Choi ),( On Ju Ham ),( Chang Yeon Lee ),( Seong Yong Choi ),( Se Yeon Lee ),( Yang Soo Jang ),( Tae Wo 한국조직공학·재생의학회 2009 조직공학과 재생의학 Vol.6 No.12

Ranolazine blocks the intracellular sodium and calcium overload accompanying myocardial ischemia and is used in antianginal therapy. The effects of ranolazine on the β-adrenoceptor signal transduction system are poorly understood. The present study was designed to confirm whether the mechanism was associated with a β-adrenoceptor antagonist activity of ranolazine on norepinephrine (NE)-induced cardiomyocytes. After cardiomyocytes were preincubated with propranolol and ranolazine, cells were treated with NE for 24 hours. The phosphorylation of ERK was decreased by ranolazine treatment, in comparison with NE-only treated cells. Intracellular Ca2+and Na+ levels decreased by 40±3% and 17±0.5%, respectively, compared to control. Ranolazine decreased expression of Ca2+/ calmodulin-dependent protein kinase II (CaMKII) by 57±4%, the Na+-Ca2+exchanger (NCX) by 21±0.5%, and the ryanodine receptor 2 (RyR2) by 47±1.5%, compared with NE-only treated control cells. Ranolazine also increased expression of the L-type Ca2+channel (LTCC) by 48±3.5%, phospholamban (PLB) levels by 45±2%, and the sarcoplasmic reticulum Ca2+ATPase 2a (SERCA2a) by 36±0.5%, compared to levels in NE-only stimulated cells. The number of annexin V/PI-positive cells fell by 39±1.5% after ranolazine treatment, compared with levels in NE-only treated control cells. Ranolazine also inhibited apoptosis by regulating the levels of the pro-apoptotic factor Bax, the anti-apoptotic factor Bcl-2, and cytochrome C release. These results demonstrate that ranolazine had an effect on NE-induced cell death through inhibition of the β-adrenoceptor signal pathway in cardiomyocytes.

저궤도 지구관측위성의 광학탑재체 지지구조물 설계 연구

김경원(Kyung-Won Kim),김진희(Jin-Hee Kim),이주훈(Ju-hun Rhee),진익민(Ik-Min Jin),김종우(Jong-Wo Kim) 한국소음진동공학회 2005 한국소음진동공학회 학술대회논문집 Vol.2005 No.5

Studies on the evaluation of efficacy of functional cosmetics-E fficacy evaluation of the w hitening cosmetics using cell signalling

SON Kyung Hun,KIM Sun Mi,CHOI Sang Sook,YUN Mi Ok,LEE Jeong Pyo,YANG Seong Jun,KIM Jae Hee,YANG Wo Kyum,KIM Young Dea,HEO Moon-Young 大韓藥學會 2005 大韓藥學會 總會 및 學術大會 Vol.2005 No.2

Aggressive 비호즈킨 림프종의 예후인자 분석과 고위험군 환자 선별을 위한 International Prognostic Index Model

김경태(Kyung Tae Kim),김태유(Tae You Kim),임영혁(Young Hyuck Im),강윤구(Yoon Koo Kang),이창희(Chang Hee Lee),곽영임(Young Im Kwak),류백렬(Baek Yeol Ryoo),성주병(Ju Byeung Sung),이영우(Young Wo Lee),장은정(Eun Jung Jang),김재학(Jae Ha 대한내과학회 1997 대한내과학회지 Vol.53 No.3

N/A Objective: Although the therapeutic outcome of aggressive non-Hodgkin's lymphoma (NHL) has been considerably improved by the introduction of combination chemotherapy, many patients still fail to achieve complete response(CR) and/or long-term survival. Because the outcome appears to depend on certain prognostic factors, long term prognosis can be predicted by identification of risk group. And also, the patients in high risk group may benefit from new therapeutic modality. In 1993, the international prognostic index model for aggressive NHL as developed far the purpose of predicting outcome and designing of therapeutic trial. Thus, analysis of prognostic factors was performed to identify independent factors for the end points of CR, overall survival, and disease-free survival. Methods : From 1989 to 1994, total 340 patients were treated with combination chemotherapy and/or radiotherapy for NHL in Korea Cancer Center Hospital. Among 340, informations on eleven prognostic factors(sex, age, performance status, Ann Arbor stage, serum LDH level, tumor size, number of extranodal disease sites, bone marrow involvement, presence of B symptom, sex, time to CR, and histologic grade) were avaliable for 273 patients. Among these, 221 patients with aggressive NHL(NCI clinical schema) were eligible for the prognostic factor analysis for the response and survival. Also, 186 patients were eligible to determine whether International Prognostic Index Model could be applicable for Korean NHL. Results: One hundred fifty patients(68%, 95% CI 62-74%) achieved a complete remission, 43 patients (20%) a partial remission. With a median follow-up of 3,5 years, overall 3 year survival rate was 6396, and 3 year DFS for the 150 CRs was 72%. In a univariate analysis for the CR and survival, Ann Arbor stage, number of extranadal disease, performance status, presence of B symptoms, presence of BM involvement, serum LDH level and histologic grade were found to be statistically significant prognostic factors. Among them, by multivariate analysis, number of extranodal disease(RR 0.2, 95% CI 0.1-0.7), B Symptoms (RR 0.4, 95% CI 0.2-0.9), and histologic grade(RR 0.2, 95% CI 0.08-0.7) showed to be independent adverse prognostic factors for CR. For disease-free survival, Ann Arbor stage(RR 2.6, 95% CI 1.1-6.4) was independent risk factor. For overall survival, number of extranodal involvement(RR 2, 95% CI 1.3-4) and histologic grade(RR 2, 95% CI 1.2-3.7) were independently significant prognostic factors. With these 2 independent prognostic factors for survival, we could establish a prognastic index model which could separate the high risk patients. However, the usefulness of this model should be confirmed in a larger patient population. The dose intensity of cyclophosphamide, during initial 3 months of treatment, was significantly associated with CR rate and overall survival(p=0.01 & 0.03, respectively). When International Prognostic Index Model was applied to our patients, patients in the lower risk groups had significantly better outcome than patients in the higher risk groups(3 year survival and RR: 77% & 1 for low risk group, 61% & 1.9 for low-intermediate risk group, 50% & 2.2 for high-intermediate risk group, and 25% & 6 for high risk group). Conclusion: In this study, we confirmed that features other than the Ann Arbor stage were independently associated with CR and survival, and the International Prognostic Index Model would be an useful tool for the selection of high-risk patients who could be benefited from more aggressive chemotherapy.