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신광호,신성용 경성대학교 공학기술연구소 2003 공학기술연구지 Vol.S1 No.2
A novel bidirectional magnetic micro actuator using a permanent magnet and micromachined silicon mirror has been designed, fabricated and characterized in this work. To realize a bidirectional microactuator, two permanent magnets having opposite magnetical direction each other were bonded onto the silicon mirror. A prototype bidirectional magnetic microactuator has been realized by integrating an electromagnet with the silicon mirror, which has permanent magnets on its backside. By applying a dc current of 1000 mA and altering its polarity, bidirectional motion on the tip of the mirror has been successfully achieved in the deflection range of 420 μm.
가축배설물의 재생자원이용에 대한 경종농가의 선호분석 : 선택형 컨조인트모형을 이용하여
신용광,佐佐木 市夫,곽영태 한국농업정책학회, 한국축산경영학회 2000 농업경영정책연구 Vol.27 No.1
This paper estimates crop farmer's preference on renewable resource using a choice-based conjoint model. For the data, 2,074 questionnaires were collected from 89 crop farmers in the Otofuke, Japan in 1999. From the empirical results, this study examines several attributes and levels of renewable resource influencing crop farmer's utilities and simulates the market share of the renewable resource.
原子力發電所가 地域의 生産, 所得과 雇傭에 미치는 效果 分析
愼鏞仁,梁光男 충남대학교 농업과학연구소 1996 농업과학연구 Vol.23 No.2
The present study has quantitatively assessed the regional production, income and employment impact resulting from the construction and operation of nuclear power plant (NPP) upon the domestic local areas by applying the regional input-output analysis model to the case of Wolsong unit-1 site. The conclusions regarding the most likely regional economic impacts upon the wolsong site are summarized as follows; 1. The income multipliers are calculated to be 1.563 for the construction phase and 1.506 for the operation phase. These values are relatively high compared with those of other conventional facilities. 2. The level of total employee's wage induced employment associated with the construction phase has been estimated to be 37,000 while that with the operational phase in 1990 to be 5,610. 3. With relation to the aspect of resident welfare it is found that the industrial sector associated with electricity, gas and water supply have remarkably improved with the construction of the NPP. 4. The NPP siting has induced substantial changes in interindustry (input-output) structures of the Wolsong unit-1 site which is one of the rural areas where all the domestic NPPs are sited. Such changes are attributed to the industrial recomposition of the region. 5. With the application of other regional economic analysis models and the use of more sufficient regional data, other detailed studies on the economic impact analysis of domestic NPP-related facility sitings are suggested to be carried out further since the influence of NPP sitings is significant to the national economic impact as well as the regional economic impact.
대형 화재로 인한 사상자의 손상 유형과 합병증 : 동인천 라이브호프 화재를 중심으로
신중호,김재광,염석란,신종환,민순식,임용수,양혁준,이근,황성연 대한응급의학회 2001 대한응급의학회지 Vol.12 No.3
Background: High risks of fire alway exist for buildings in urban areas, especially those in downtown. Crowds, as well as more complex and larger structures, may cause more victims in the event of fire; therefore, emergency medical service plans must be established for such disastrous events. Methods: On the evening of October 30,1999, a fire broke out in downtown, Dong-Incheon Live-Hof restaurant; 56 people were killed and 76 were injured. Most of them were teenagers. We retrospectively reviewed the medical records of the victims, Results: 1) Among the 56 dead, 54 died from smoke inhalation, one from extensive burns, and one from sepsis during treatment. 2) Among the 76 injured, 70 patients suffered from smoke inhalation, 53 from burns, and 9 from several types of trauma (sprains, contusions, lacerations, abrasions, fractures, etc.). 3) Later complications were laryngeal edema, pulmonary edema, scar contracture, and hypoxic brain damage, and so forth. 4) Post traumatic stress syndrome was unexpectedly more prevalent in mildly to moderately injured survivors and witnesses than in seriously injured survivors. Conclusion: Many complications exist after a fire. Some may be resolved in time, but others may result in permanent sequelae. Early rescue, early triage, and early management during transport by emergency medical service (EMS) personnel can result in fewer complications and a lower mortality rate. Therefore, we propose the establishment of plans to be followed during various major disasters.
自家 및 他家授粉이 사과와 배의 結實과 品質에 미치는 影響
辛鏞億,高光出 서울大學校 農科大學 1986 서울대농학연구지 Vol.11 No.1
To find out the effect of different pollen sources on the fruit setting and the characteristics in the 'Fuji' apple and 'Okusankichi' pear cultivar, this study was carried out by making the self-and cross-pollination using 8 commercial apple and pear cultivars as pollinizers, respectively. The results are summarized as follows: 1. When self-pollinated, most of varieties examined had low setting per cent of fruits, while 'Megumi' showed an extraordinary 33.5% of high self-fruitfulness. There were a few seeds in most self-pollinated fruits, and its fruit size was small compared with cross-pollinated ones. 2. For the fruit setting per cent, no significant advantage could be attributed to anyone over another as pollinizer for 'Fuji' except 'Sekaiichi' and 'Tsugaru.' 3. The weight of fruit pollinated by 'Spur Earliblaze' was decreased as compared with another. 4. No difference of fruit quality could be found out in the cross-pollinated fruits of 'Fuji' apple. 5. In the 'Okusankichi' pollinations, no significant advantage in fruit setting could be attributed to anyone. 6. 'Tsuri' and Hosui' set significantly larger and oblong fruits than open-pollinated ones. The differences of fruit shape index (length/diameter) in each cross-pollinated fruits may be due to the ability of certain pollen to produce seed rather than metaxenia. 7. Possible effects of metaxenia such as color and fruit quality could not be found in the cross-pollinated fruits of 'Okusankichi'. 8. There was negative correlation between number of seed and fruit shape index (length/diameter) in 'Okusankichi' pear, while no consistent correlation of number of seed and fruit shape index could be found in 'Fuji' apple.
정신분열병에 대한 Risperidone의 효과 및 안전성에 관하여
신석철,왕성근,지익성,이선우,이규광,이봉희,이진영,황선희,신용재,배경도,김정란 충남대학교 의과대학 지역사회의학연구소 1997 충남의대잡지 Vol.24 No.1
In order to evaluate the efficacy and safety of risperidone, 10 patients with chronic schizophrenia were examined for 8 weeks in a silgle-open study. After the wash-out period of 1 week, risperidone was administered. Efficacy was evaluated by means of Positive and Negative syndrome Scale for Schizophernia(PANSS) and Clinical Global Impression(CGI). Safety assessment included the Extrapyramidal Symptom Rating Scale(ESRS), vital signs, body weight, ECG, and laboratory tests. The results were as follows 1) On the PANSS total score, there was significant improvement of total score after 1 week (P<.05) of administratiom. 2) On the PANSS positive and negative subscal, there were significant improvement of posotive and negative scores after 2 weeks (P<.05) of administration. 3) On the PANSS general psychopatholgy subscals, there were significant improvement of general psychopathologyscores after 1 week (P<.05) of administratiom. 4) On the CGI, there was significant decreasement of clinical impression of severity of schizophrenia score after 2 week (P<.05) of administration. 5) A statistically significant increase in body weight (P<.05) was observed after 8 weeks of administration. 6) EPS reached the peak at the end of the 1st week of administration of risperidone (11.8± 24.25) but they were easily relieved by addition of benztropine and clonazepam. There was not significant change in laboratory tests, vital sign, ECG after 8 weeks of administration. These results suggest that Risperidone is an effective antipsychotics and clinically safe except for increased body weight in chronic schizophrenia.
신용광,박민수,송금찬 한국농업정책학회, 한국축산경영학회 2001 농업경영정책연구 Vol.28 No.1
The pig farm groups are divided into several different systems. This paper proposes the non-parametric approach model with different systems, estimates the efficiency of the pig farm group and compares overall performance of the two systems. For the data, 26 farms were surveyed from cooperation performance system and 17 farms from semi-cooperation performance system in 1997. The results can be used to evaluate the overall performance of different pig farm group system.
한국재래흑염소에서 발정 및 과배란 유도와 외래유전자 주입에 적합한 1세포기 수정란의 채취
신상태,이두환,김명철,이운규,이철상,한용만,이경광 충남대학교 수의과대학 동물의과학연구소 1998 動物醫科學硏究誌 Vol.6 No.-
Three different treatments for induction of estrus in Korean native black goats were compared: follicle stimulating hormone(FSH, FSH-p^TM), FSH combined with MAP(intravaginal impregnated sponges, Veramix^ⓡ, containing 60 ㎎ medroxy progesterone acetate for 14 days), and FSH combined with progesterone(Ovaron^ⓡ, 10 ㎎ IM for 10 days) and PGF_2α(Lutalyse^ⓡ, 3 ㎎ IM at first FSH injection). FSH for inducing estrus and superovulation was given a total 20 ㎎ intramuscularilly in decreasing dosage injections twice daily over 4 days. The MAPs were withdrawn at the 3rd day of FSH injection. Estrus observations were conducted every 6 hours from last FSH injection for 24 hours by placing the does with fertile male goats. Estrus and superovulation were more successfully induced with treatment of MAP + FSH than other treatments(FSH only, or progesterone + PGF_2α + FSH) (estrus induction; 100 vs 42.8 and 71.4%, ovulation points; 11.4 vs 5.4 and 4.4, respectively). The effect of gonadotropin releasing hormone(GnRH) on the ovulation rate was also examined. However, no difference was observed for inducing ovulation with treatment or dosage(100 ㎍ 200 ㎍) of GnRH. Low midline laparotomies were performed, and then ovarian responses (ovulations and follicular development) were examined by exteriorization of the reproductive tracts. Ova were recovered from oviducts by retrograde flushing 60-146 hours after MAP removal, and were classified the developmental stages. Overall 66.1% (236/357) of recovery rate was obtained from 30 superovulated does. The optimal recovery time of microinjectable 1-cell zygotes was approximately 72-76 hours after MAP removal.
급성 심근경색 초기에 도플러 심초음파를 이용한 좌심실 이완기 기능의 평가
신원용,김주성,김철현,이광희,최태명,현민수,김성구,권영주 순천향의학연구소;Soonchunhyang Medical Research Institute 2000 Journal of Soonchunhyang Medical Science Vol.6 No.1
Background : Congestive heart failure after acute myocardial infarction relate to left ventricular systolic sysfunction. Also, left ventricular diastolic function contribute to heart failure. The aims of this study were, firstly to characterize left ventricular diastolic function by transmitral flow velocity, and secondly to study the significance of Doppler measurements in relation to the development of heart failure in the early phase of myocardial infarction. Method : Pulsed Doppler echocardiography of transmitral flow was assessed in 34 patients with acute myocardial infarction. According to the Doppler transmitral flwo velocity profile, the study patients were assigned to the three groups: normal filling pattern (DT > 140ms, IVRT < 100ms), relaxation abnormality (DT > 140ms, IVRT ≥ 100ms), pseudonormal or restrictive pattern (DT ≤ 140ms). Also, on the basis of the presence of heart failure during first week of hospitalization, the patients were divided into two groups: patients with no sign of heart failure (Killip class Ⅰ) and heart failure (Killip class Ⅱ-Ⅳ). Results : Of the 34 patients studied, 10(29%) were normal filling pattern, 17(50%) abnormal relaxation and 7(21%) were restrictive patterns. The left ventricular ejection fraction(EF, 40 ±6%) of restrictive pattern was significantly lower than that of normal filling pattern of abnormal relaxation(p < 0.01). And, the IVRT, DT, E/A and left ventricular EF were reduced in patients with heart failure(14 patients) compared to no sign of heart failure(20 patients)(p<0.05). Of the patients with heart failure, IVRT and left ventricular EF were reduced in patients with DT≤140 ms compared to DT> 140ms(p=0.001). Conclusion : Left ventricular diastolic dysfunction is present early after onset of symptoms of acute myocardial infarction. Assessment of left ventricular diastolic function complements measurements of systolic function in the evaluation of cardiac function. DT, IVRT, E/A and left ventricular EF are useful predictors for development of congestive heart failure following acute myocardial infarction.
남해주민들의 운동행동변화단계에 따른 변화과정, 의사결정균형 및 자기효능감
천광훈,고광욱,김윤지,신용현 고신대학교 의과대학 2010 고신대학교 의과대학 학술지 Vol.25 No.2
Background: The purpose of this study was to examine the differences of the process of change, decisional balance. self-efficacy and perception of subjective health according to the stages of exercise behaviors suggested by transtheoretical medals among Namhae resident. For systemic continuos health promotion initiatives of public health center, basic information about exercise behaviors in need. Method: The stage of change, decision balance, self efficacy and other health-related information was surveyed from systematic sample of Namhae population. Result: The result of process of change was precontemplation (32.4%), contemplation (18.8%), preparation (18.8%), action (11.0%), and Maintenance (23.6%). Conclusion: There are corroborative evidence about the need for interpersonal organizational intervention to exercise behaviors of Namhae population and social alternative for the exercise behavior.