• 한국콘텐츠학회논문지
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• 제19권9호
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• pp.637-645
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• 2019

RFID 그룹증명은 다수의 태그가 동시에 스캔 되었음을 증명하는 요킹증명의 확장이다. 기존의 그룹증명 기법들은 태그응답의 손실을 검증단계에서 감지하는 지연된 태그손실 감지를 지원한다. 그러나 지연된 태그손실 감지는 태그의 손실을 즉각적으로 감지해야 하는 실시간 응용에는 적합하지 못하다. 이 연구에서 나는 태그의 손실을 빠르게 감지하는 새로운 태그응답손실 감지기법인 TRLD(Tag Response Loss Detection)를 제안한다. 제안기법에서 태그는 응답과 함께 시퀀스번호를 전송하며, 리더는 시퀀스번호를 통해 태그를 식별하는 과정 없이 태그응답의 손실을 감지한다. 안전성 분석에서는 메시지 비구별성 실험을 통해, 시퀀스번호가 특정태그와 태그그룹을 구분하려고 시도하는 메시지 분석 공격에 대해 안전하다는 것을 보인다. 효율성 측면에서 제안기법은 어떤 태그의 응답이 손실되었는지 확정하기 위해 기존의 기법보다 더 적은 수의 통신과 데이터베이스 연산을 요구한다.

• 한국어병학회지
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• 제15권2호
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• pp.65-75
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• 2002

This study was performed to know the effects of stress induced by the daily fluctuation of water temperture from 18$^{\circ}C$ to 25$^{\circ}C$ up and down for 30 days on the defence mechanism of olive flounder. Puralichthys olivaceus. To make clear the temperature stress on the defense mechanism of the tested fish. several factors of immune response such as counting of leucocyte appearance in peripheral blood, phagocytic activity in whole blood cells, nitroblue tetrazolium(NBT) reduction, chemiluminescence(CL) response, and lysozyme activity were investigated at 28 days after giving the change of water temperature. The fish was controlled under the none feeding condition during experimental period. Mortality of the tested fish was rapidly increased up to 22% within the first one week of the experimental period without any additional stress factors. The number of neutrophil of peripheral blood in the tested group was significantly higher than the control group at the 2nd week. but the number of lymphocyte was significantly lower than the control group at the 1st and 3rd day of the experimental period. respectively. In the NBT reduction test, the activity of macrophage in the control group fish was the highest on the 7th day while that in the tested group was on the 3rd day. Also. the phagocytosis of tested group against formalin killed cells was retarded compared with the control. CL response of the tested group was significantly lower from 2nd to 5lh day of the experimental period than the control. 'The lysozyme activity of tested group was remained higher during the experimental period than the control. Even though the tested fish showed different results in some non-specific factors of immune respceses between tested and control group fish, olive flounder seems highly adaptable in repealed water temperature change in condition after one week under the given temperature fluctuation range.

• Perspectives in Nursing Science
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• 제9권1호
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• pp.36-44
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• 2012

Purpose: The aim of this study was to examine the effects of a yoga program on perceived stress, stress response and heart rate variability in professionals. Methods: The research design was a quasi-experimental intervention study. The participants were 47 adults with professional jobs consisting of an experimental group with 23 adults and a control group with 24 adults. The duration of the yoga program was eight weeks from July 4 to August 30, 2012. Results: There were significant decreases in the stress response score after the yoga program. No significant changes in perceived stress and heart rate variability were observed between the experimental group and control group. However, there were significant decreases in perceived stress, stress response scale, and heart rate variability for some participants whose stress levels were high. Conclusion: An eight-week-long yoga program could be considered as an intervention to decrease the stress response of professionals even though it might not reduce their perceived stress and heart rate variability. To further analyze the effects of a yoga program in professionals, changes in intervention strength (such as longer periods and frequency) and the development of physiological measures, which would show the co-relationship between perceived stress and physiological response, are necessary in future studies.

• 센서학회지
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• 제32권4호
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• pp.207-212
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• 2023

H₂S is a toxic and harmful gas, even at concentrations as low as hundreds of parts per million; thus, developing an H₂S sensor with excellent performance in terms of high response, good selectivity, and fast response time is important. In this study, an H₂S sensor with a high response and fast response time, consisting of a sensing material (SnO₂), an electrode, a temperature sensor, and a micro-heater, was developed using micro-electro-mechanical system technology. The developed H₂S sensor with a micro-heater (circular type) has excellent H₂S detection performance at low H₂S concentrations (0-10 ppm), with quick response time (<16 s) and recovery time (<65 s). Therefore, we expect that the developed H₂S sensor will be considered a promising candidate for protecting workers and the general population and for responding to tightened regulations.

• Journal of Acupuncture Research
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• 제19권2호
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• pp.39-50
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• 2002

Objective : The aim of this study was to investigate the effect of CMM oral administration and herbal acupuncture at BL13 LU4 on Asthma induced by ovalbumin in rats Methods : Several experimental items were measured and compared each other ; that is body weight change, oxygen consumption rate, Albumin change, white blood corpuscle change, Erythrocyte change, IgE change. Results : 1. Body weight was significantly increased in herbal acupuncture group after its administration while there was no such a response in oral administration group. 2. Oxygen Consumption rate was significantly increased in oral administration group and herbal acupuncture group. 3. Albumin in serum was significantly increased in oral administration group after its administration while there was no such a response in herbal acupuncture group. 4. White blood corpuscle in blood was significantly increased in oral administration group after its administration while there was no such a response in herbal acupuncture group. 5. Erythrocyte in blood was significantly increased in oral administration group after its administration while there was no such a response in herbal acupuncture group. 6. IgE in blood was decreased in oral administration group and herbal acupuncture group but there was no significance in oral administration group and herbal acupuncture group. Conclusion : Based on the above results it is assumed that CMM oral administration and CMM herbal acupuncture can help the treatment of Asthma induced by ovalbumin in rats.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 2003년도 추계 학술발표회논문집
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• pp.117-124
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• 2003

Long span structures with low natural frequencies such as shopping malls, large offices, and assembly rooms may experience signification dynamic responses due to human activities. In this study, equations to estimate the magnitudes of group walking loads are derived and a simple procedure to estimate and evaluate the corresponding response of the existing and new building structures subjected to human loads is proposed. The effectiveness of the proposed method is verified analytically using a simple floor and experimentally on a footbridge measuring the structural response induced by group pedestrians. Results indicate that the amplitudes of group walking loads can be easily estimated if the mode shapes are available, and that the corresponding structural responses can be estimated easily by the simple response measurement using the proposed method.

• 동의신경정신과학회지
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• 제6권1호
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• pp.1-17
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• 1995

In order to investigate the Anti-stress effect of Guibiondamtang in the immobilization stressed rats, the level of serum catecholamine, the change of body weight, the humoral and cellular immune response were studied. The results were as follows; 1. The decrese of the body weight was significantly inhibited in test group for Guibiondamtang, comparting to the control group. 2. The increase of the level of serum norepinephrine was significantly inhibited in test group, comparing to the control group. 3. The increase of the level of serum epinephrine was significantly inhibited in test group, comparing to the control group. 4. In the hemagglutinaton titer, the control group was decreased on the serum antibody titer but test group was inhibitory effect on the decrease of sereum antibody titer. 5. In the plaque formation test, the control and test group were not shown significant differences. 6. In the foot pad swelling respopnse, the control group was decreased on DTH response but test group was increased comparing to the normal group. 7. There was no change on the distribution of lymphocyte subset(CD4, CD8), grnulocyte and macrophage analyzed by flow cytometry.

• Journal of Preventive Medicine and Public Health
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• 제11권1호
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• pp.14-23
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• 1978

This survey was conducted on a total 672 pulmonary tuberculosis patients who were registered at certain health center in Busan, during the period from July 15th to August 31st, 1977, based on Modified Cornell Medical Index(CMI) consisting of 70 questions. Number of 'Yes' response of an individual patients was collected by each large section of Modified CMI. The each number of 'Yes' response was standardized by mean of Z scoring. Z score was obtained by following formula. Z=50+10(Xi-m)/s M : means of 'Yes' response by each section for all subjects s : standard deviation of the mean Xi : number of 'Yes' response by each section in an individual patients The results of obtained were as follows: 1. The number of investigated cases were 672 (459 males and 213 females). The most prevalent group was 20-24 years old group as 18.4% by age, moderate advanced group as 50.8% by radiological diagnosis, INH+PAS+SM group as 34.7% by antituberculotics and unemployed group as 59.9% by occupation. By bacteriological examination of sputum, the rate of negative group was 60.5% and positive group was 39.5%. 2. Z score of complaints by sex was higher in female as 52.4 than in male as 48.9 in general. By radiological diagnosis, there was decreasing tendency with age in male but increasing tendency with age in female. 3. By age group, Z score of complaints was increasing tendency with age in male but there was non-significant differences in female. 4. By bacteriological examination of sputum, the Z score of complaints was increasing tendency with the more discharged bacteria in both sex generally. 5. By antituberculotics, INH group was revealed the highest Z score of complaints as 50.4 in male and INH+PAS group was the highest as 51.21 in female. 6. By occupation, agricultural and fisherman group was the highest as 53.5 and the next group was professional, technical and related workers, unemployed and sales workers in that order.

• 동의생리병리학회지
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• 제17권1호
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• pp.123-129
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• 2003

Experimental studies were done to research the dinical effects of Juglandis Semen aqua-acupuncture and acupuncture(BL 13) on the anti-allergic response. anaphylaxis provoked by the compound 48/80, delayed type hypersensitivity response to picryl chloride and SASC and inflammation response to egg albumin. The following results have been obtained: Juglandis Semen aqua-acupuncture and acupuncture(BL13) group were increased the survival rate in compound48/80 induced systemic anaphylactic reaction. Picryl chloride induced contact dermatitis and delayed type hypersensitivity in SRBC challenged mouse were significantly decreased in Juglandis Semen aqua-acupuncture and acupuncture (BL13) group. Inflammation response - WBC, CRP and Nitric Oxide in egg albumin induced allergic rat were significantly decreased in Juglandis Semen aqua-acupuncture and acupuncture(BL13) group. According to the above results, Semen aqua-acupuncture and acupuncture(BL13) both depress the allergy reaction.

• Restorative Dentistry and Endodontics
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• 제10권1호
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• pp.93-101
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• 1984

The experimental study was made to investigate the effect of the "Heliosit" composite resin on the dental pulp. The 36 class V cavities were prepared on the healthy permanent teeth of 3 days, and were divided into 5 groups and filled with the experimental filling materials. Control group: Zinc Oxide-Eugenol cement filling Experimental groups: Group 1: Dentin Adhesit application & Heliosit filling with or without dycal base Group 2: Heliosit filling with or without dycal base Group 3: Durafill filling with dycal base Group 4: Hipol filling with dycal base Animals were sacrificed after 1 weeks, 2 weeks, and 4 weeks following operation. The teeth were decalcified, sectioned and stained with hematoxylin and eosin. The results obtained form this study were as follows: 1. All experimental group showed slight pulp response. 2. Dentin Adhesit group showed minimal pulp response in both dycal bases and no base cases. 3. In group 2, mild pulp response was found in early stage and repairing process was found as the time elapsed. In no base cases, healing process was delayed slightly. 4. There was little difference in the result among Heliosit group, Durafill group and Hipol group.