김수영 시의 죽음의식 분석

김영주 숙명여자대학교 2002 숙명語文論集 Vol.4 No.-

This thesis is to study a consciousness of death in Kim Soo-Young's poems and to review Heidgger's influence on them. In Kim's works are many consciousness of death, which is a main stream of the literary world at that time. In the post-war, the existence becomes the most important matter and Kim Sao-young, who was recruited forcibly, witnesses the other's death and then explores the matter of death deeply. He understands the death as a possibility of an unique being's existence, and realizes that the life and the death coexist in the actuality, which can be understood by exploring the matter of death at first. We, as beings in the worlds, coexist with the other and have close relationship, The death exist with the life, and it is not an object of fear any more. Through the other's death, all of us are closely related to it. Kim Sao-Young emphasizes a language in order to explain the present being, the language is used as an implemental being, and also speaks by itself. A nature of language becomes words and then "the language becomes a home of existence," When the language says words and responses to them, it can be said rightly. However if there is no answer, the present existence will come to an end of its own existence. A human being says words, and he/she listens to a direction in the light of responding to the direction of the language. Therefore Kim rebukes himself for no answer to the language of freedom and justice. Because it is related with death, he cannot respond easily. The understanding about the existence can be made by the nature of language, so the existence which cannot say words is unable to be described existentially and subsistently. Kim shows the death as an ending of the life throughout his poems. The death is a possibility which the present existence can exist. As a human being's existence is based on limited sense of time, he is conscious of time. The ending of time is that of the present existence, and time has a close relationship with the life. Kim tries to explain, with the consciousness of death, a subsistent meaning-a relationship between the language and the present existence of the present existence which exists with the death -and go towards the death.

보완대체의학에 대한 간호학과 학생의 주관성 연구

박은영 ( Eun Young Park ),이은남 ( Eun Nam Lee ),강지연 ( Ji Yeon Kang ),주현옥 ( Hyeon Ok Ju ),김삼숙 ( Sam Sook Kim ),최은정 ( Eun Jung Choi ),김학선 ( Hack Sun Kim ) 경희대학교 동서의학연구소 2011 동서간호학연구지 Vol.17 No.1

보완대체의학은 건강증진과 질병예방을 위한 총체적인 접근법의 하나로 환자뿐 아니라 일반인들 사이에서도 이용률이 증가하고 있고, 교육에 있어서도 보완대체요법 관련 교과목을 의학이나 간호학의 정규 교과과정 내에 포함시키는 대학이 늘어남에 따라 미래의 건강관리 제공자인 간호학생들의 보완대체의학에 대한 인식이나 태도를 파악하는 것은 중요하다. 이에 본 연구는 Q방법론을 이용하여 보완대체의학에 대한 간호학생의 반응을 유형화하고 구체적인 특성을 파악하고자 시도되었다. 보완대체의학에 대한 간호학생의 반응은 4개로 유형화되었으며, 각 유형은 실용적 확신형, 견제형, 가치 인정형, 제한적 수용형으로 명명하였다. 각 유형의 명명에서 볼 수 있듯이 간호학생들은 인식에서 약간씩은 차이가 있지만 보완대 체의학에 대해 비교적 긍정적인 태도를 갖고 있는 것으로 나타났다. 이러한 결과는 간호학생들이 보완대체요법에 대해 긍정적인 태도를 보였음을 보고한 Kim (2004), Kim, Erlen, Kim 과 Sok (2006), Uzun과 Tan (2004)의 연구결과와 일치한다고 할 수 있다. 제1유형은 ‘실용적 확신형’으로 보완대체요법의 효과를 단순히 인정하기보다는 실용성에 초점을 맞춘 유형이다. 보완대체요법의 문제점으로 많이 지적되는 것 중의 하나가 사람마다 효과가 다르기 때문에 일률적으로 적용하기 어렵다는 것인데, 제1유형의 대상자들은 이를 오히려 실용적인 측면으로 인식하여, 보완대체요법의 효과는 사람마다 결과가 다르게 나타날 수 있기 때문에 어떤 치료법을 일률적으로 적용하기보다는 자신한테 맞는 보완대체요법을 찾아야 한다고 인식하는 것이다. 또한 제1유형의 대상자들은 보완대체요법에 대해 효과가 없거나 의미 없는 행위이며 의학적 치료를 방해하거나 효과를 믿을 수 없다는 데는 강하게 반대를 했다. 간호학생의 보완요법에 대한 태도를 조사한 Kim (2004)의 연구에서도 보완대체요법이 엉터리 치료법이라는 데에 대해 가장 부정적인 태도를 보임으로써 본 연구결과와 일치한다. 간호학생의 주관성을 조사한 Hwang (2004)의 연구에서는 간호학생의 인식이 세 가지로 유형화되었는데 ‘긍정적 인정형’으로 명명된 사람들은 보완대체요법이 건강의 유지와 증진에 도움이 되며, 면역력을 향상시키고 심리적 지지를 제공하고 몸을 보호하며 안위를 증진시키는 것으로 인식하고, 엉터리 치료법이고 환자의 치유에 방해가 되므로 사용을 피해야 하고 과학적인 근거를 설명할 수 없으므로 신뢰할 수 없다는 데대해서는 강한 반대의 의사를 표함으로써 본 연구에서 ‘실용적 확신형’으로 명명된 대상자들과 유사한 인식양상을 보였다. 본 연구에서의 ‘실용적 확신형’의 사람은 보완대체요법에 대해 쉽게 접근할 수 있고 여러 가지 효과를 한꺼번에 기대할 수 있다는 점에서 좀 더실용적인 면을 강조한 점이 차이라고 할 수 있다. 제2유형은 ‘견제형’으로 보완대체의학의 부작용에 대한 염려와 효과에 대한 정확한 작용기전의 뒷받침을 요구하는 유형으로, Hwang (2004)의 연구에서 보완대체요법은 체계적인 검증 후에 정통적인 치료와 병행해서 사용해야 효과가 있다고 하여 ‘객관적 수용형’으로 명명한 것과 매우 유사하다. 또한 간호사를 대상으로 한Son (2002)의 연구에서 보완대체요법을 현대의학을 보완해주는 치료법으로 고려하면서 과학적인 근거를 확립하는 일이 필요하다고 제시한 것과 일치한다. Ernst (2000)도 보완대체요법을 이용하는 대상자들은 보완대체요법의 안전성과 효율성에 대해서 알고자 하며, 보완대체요법에 대해 건강관리자와 개방적으로 의사소통할 때 안정성이 확립된다고 하여 본 연구의 ‘견제형’ 유형과 유사한 것을 볼 수 있다. ‘견제형’의 사람들은 보완대체요법에 대한 효과가 사람마다 다르게 나타나므로 보완대체요법을 무조건적으로 받아들이기 이전에 임상적인 효율성에 대한 정확한 근거와 과학적인 검증에 관한 많은 연구들이 이루어져야 할 것을 강조한 유형이다. 이러한 견해는 최근 의학이나 간호학 교육에서 근거중심의 행위를 강조하고 있는 것을 반영하는 것이라 할 수 있다. 제3유형은 ‘가치 인정형’으로 보완대체의학에 대해 과학적 신뢰를 갖고 있지는 않지만 보완대체요법의 건강증진에 대한 가치를 인정하는 유형이다. 의사를 대상으로 보완대체요법의 치료 효과에 대한 태도를 분석한 Jang 과 Park (2003)의 연구에서 62.2%는 ‘설명하기는 어렵지만 보완대체요법은 효과가 있다’고 하여 작용기전에 대한 이론적 근거는 부족하지만 치료효과에 대해서는 비교적 긍정적으로 인식하고 있는 것으로 나타나 본 연구 대상자의 ‘가치 인정형’과유사한 태도를 보였다. 또한 초등학교 보건교사를 대상으로 보완대체요법의 문제점에 대한 인식을 조사한 Kim, Kim과 Cho (2007)의 연구에서 40.5%가 ‘과학적인 검증의 부족으로 치료효과가 의심된다’고 지적하였지만 학교보건실무에서 보완대체요법의 적용가능성에 대한 질문에는 72.1%가 ‘가능하다’고 하였으며, 78%가 보완대체요법의 적용이유로 ‘증상완화, 치료보조의 효과’ 때문이라고 답하여 본 연구결과와 유사한 인식을 보였다. 또한 보완대체요법 교과목을 수강한 간호학생들에게 보완대체요법의 치료적 효과에 대해조사한 Kim (2005)의 연구에서도 ‘건강유지증진을 위해 일반 대중들도 보완대체요법을 많이 적용하고 있다’에 대해 5점 만점에 3.7점으로 응답하여 비교적 긍정적 태도를 보였다. 위의 결과들을 종합해 볼 때 보완대체요법이 체계적인 지식체로 인정하기엔 과학적 근거가 부족하지만 신체의 자연 치유력과 면역력을 증가시켜 건강증진에 영향을 미친다는 본 연구의 ‘가치 인정형’과 유사하다고 할 수있다. 제4유형은 ‘제한적 수용형’으로 보완대체의학이 건강증진에 도움이 되고 심리적 안정감을 주는 여러 가지 효과가 있는 반면 부작용이 있을 수 있고 사람마다 효과가 다르게 나타날 수 있으므로 작용기전에 대한 연구도 더 필요하다고 생각하는 유형으로 무조건적으로 수용하기보다는 제한적으로 수용하는 유형이다. 대학생을 대상으로 보완대체요법의 문제점에 대한 인식을 조사한 Gwon 등(2008)의 연구에서 ‘부작용을 예측할 수 없다’가 37.7%로 가장 높았고, 23.2%가 ‘비과학적이다’라고 응답함으로써 자신에게 맞는 보완대체요법을 찾아 효과를 볼 수는 있지만 부작용에 대한 우려, 효과에 대한 객관성 부족 및 작용기전에 대한 체계적 검증의 필요성을 언급한 본 연구에서의 ‘제한적 수용형’ 대상자와 유사한 인식을 보였다. Purpose: The purpose of this study was to grasp the subjectivity of the nursing students toward CAM and put the outcomes into use as basic facts and figures in developing and applying a curriculum associated with CAM. Methods: Q methodology was employed to explore the nursing students` subjectivity from their rank-order statements. For the Q population, individual in-depth interviews and literature research were conducted. Finally, 30 participants completed 40 Q statements. The data were analyzed using the QUANL software package. Results: The current survey that probed into the subjectivity of the nursing students relative to CAM abstracted four categories, namely, practical and convinced type, keep-under-control/wait-and-see type, merit acknowledging type and limitedly accepting type. Conclusion: It is recommended that various educational programs should be developed to shift the awareness of CAM on the part of the nursing students, based on the findings set forth in the current study.

Effects of Phenytoin and Diazepam on the Seizure Activity in the Cortical Dysplasia Animal Models

Kim, Si-Hyung,Choi, In-Sun,Cho, Jin-Hwa,Park, Eun-Ju,Jang, Il-Sung,Choi, Byung-Ju,Kim, Hyun-Jung,Kim, Young-Jin,Nam, Soon-Hyeun The Korean Academy of Oral Biology 2006 International Journal of Oral Biology Vol.31 No.2

Dysplasia-associated seizure disorders are markedly resistant to pharmacological intervention. Relatively little research has been conducted studying the effects of antiepileptic drugs(AEDs) on seizure activity in a rat model of dysplasia. We have used rats exposed to methylazoxymethanol acetate(MAM) in utero, an animal model featuring nodular heterotopia, to investigate the effects of AEDs in the dysplastic brain. Pilocarpine was used to induce acute seizure in MAM-exposed and age-matched vehicle-injucted control animals. Field potential recordings were used to monitor amplitude and numbers population spikes, and paired pulse inhibition in response to stimulation of commissural pathway. Two commonly used AEDs were tested: diazepam 5, 2.5mg/kg;phenytoin 40, 60mg/kg. Diazepam(DZP) and phenytoin(PHT) reduced the amplitude of population spike in control and MAM-exposed rats. However, the amplitude of population spike was nearly eliminated in control rats as compared to the MAM-exposed rats. Pharmaco-resistance was tested by measuring seizure latencies in awake rats after pilocarpine administration(320mg/kg, i.p.) with and without pretreatment with AEDs. Pre-treatment with PHT 60 mg prolonged seizure latency in control rats, but not in MAM-exposed animals. The main findings of this study are that acute seizures initiated in MAM-exposed rats are relatively resistant to standard AEDs assessed in vivo. These data suggest that animal model with cortical dysplasia can be used to screen the effects of potential AEDs.

Continuous Wave of Condensation Technique으로 근관충전시 치근면 온도상승 분석

김영주,황윤찬,김선호,황인남,최보영,정영진,정우남,오원만 전남대학교 치의학연구소 2003 구강과학 Vol.15 No.4

This study was conducted to evaluate safety to the supporting tissues of the root while the root canal is obturated using continuous wave of condensation technique. A extracted maxillary central incisor was prepared for repeated canal obturation. After conventional access opening, working length was then established to the point 1㎜ from anatomical root apex. The root canal was prepared with GT rotary Ni-Ti file (Dentsply Maillefer, Switzerland). Five thermocouples (Onega Engineering Inc., USA) were placed at 2㎜ increments on one side beginning 1㎜ from the anatomical root apex and the other five thermocouples at 2㎜ increments on the other side beginning 2㎜ from it. For obturation, a nonstandardized medium size gutta-percha cone and a ML Buchanan plugger (Analytic technologies, USA) were selected. After drying of root canal, AH 26 root canal sealer (Dentsply Detrey, Germany) was applied on the wall of the root canal. Baseline temperature was measured on the root surface. The ML size plugger was preheated for 2seconds and then the real temperature of it was recorded before insertion into the root canal. The root canal was obturated with continuous wave of condensation technique as described by Buchanan. The root surface temperature was recorded during obturation and it was performed ten times at each of the following temperature settings: 150℃, 200℃, 250℃ and 300℃. After completion of the temperature recording, the dentinal-cementum thickness at each sites where thermocouples were attached was measured. The data were analyzed using one-way ANOVA followed by Scheffe's test and linear regression test. The results were as follows. 1. When the temperature was set at 150℃, 200℃, 250℃ and 300℃ on the digital display of System B HeatSource, the real temperature of the plugger at the 1㎜ point from the tip revealed 130.82±2.96℃, 158.00±5.26℃, 215.92±6.91℃ and 249.88±3.65℃ respectively. 2. The position of 8 ㎜ from the anatomical apex showed the highest temperature increase at each temperature settings and it was significantly higher than those of other positions (p<0.01). The temperature rise was constantly increased toward coronal portion from apex of the root. 3. The maximum temperature increase on the root surface was 2.37±0.09℃ at 150℃ setting, 3.11±0.12℃ at 200℃ setting, 3.93± 0.09℃ at 250℃ setting and 5.69± 0.15℃ at 300℃ setting. These results suggest that it be relatively kind to the supporting tissues of the root that the root canal is obturated using continuous wave of condensation technique at 150℃, 200℃, 250℃ and 300℃ temperature settings on digital display of System B HeatSource.

도플러지수를 이용한 급성 심근경색증의 진단에 있어 노인 환자의 특징

김원,조규종,오세현,이영수,이은주,홍진숙,김영득,현석천,임경수 대한노인병학회 2000 Annals of geriatric medicine and research Vol.4 No.4

대동맥 협착증과 동반된 출혈성 위장관 동정맥 기형에서 Estrogen-Progesterone 치료 1예

김도연,김화정,김효정,남준식,박수영,박영미,신정은,주미순,황민규,정혜경,손혜영,이선영,이한주 大韓消化器內視鏡學會 1999 Clinical Endoscopy Vol.19 No.부록2

Mechanical Characterization of Nano-Structured Materials Using Nanoindentation

( Ju Young Kim ),( Sung Hoon Kim ),( Jung Suk Lee ),( Kyung Woo Lee ),( Dong Il Kwon ) 대한금속재료학회 ( 구 대한금속학회 ) 2006 METALS AND MATERIALS International Vol.12 No.3

The principal strengths of the nanoindentation technique, which is used extensively to measure the mechanical properties of nano/micro materials, are easy sample preparation and simple experimental method. Hardness and Young`s modulus are essential properties measured by nanoindentation; hardness corresponds to resistance to plastic deformation whereas Young`s modulus is related to elastic deformation. Two key difficulties arise in association with nanoindentation on small volumes: measurement accuracy and material response. Here we discuss the indentation size effect (ISE) considering tip bluntness and variation in hardness of nano-multilayers with a bilayer period, representative research on measurement improvement, and material response at nanoscales.

호흡기 감염에서 Sparfloxacin 의 임상적 유용성에 대한 Enoxacin과의 비교 검토

김주옥,김선영,김관형,서지원,박석영,이종진,박성학 대한감염학회 1995 감염 Vol.27 No.4

목적:폐렴, 기관지염, 만성기관지염에서 fluoroquinolone제제로서 항균력이 강하고, 혈중 반감기가 길고, 객담과 조직내 농도가 높은 sparfloxacin의 안전성과 효과를 enoxacin과 비교하기 위해 본 연구를 시행 하였다. 방법:1994년 10월부터 1995년 4월까지 충남대 부속병원과 대전 성모병원에 내원한 폐렴, 급성기관지염, 만성기관지염이 급성으로 악화된 환자 63명을 대조군(32명)(enoxacin 100 mg 1일 3회 경구투여), 실험군(31명)(sparfloxacin 200mg 1일 1회 경구투여)으로 나누어 임상증상, 세균학적 객담 검사, 혈액검사, 실험실내 항균력검사로 그 치료율 및 안전성을 비교하였다. 결과: 1) 임상종합 평가, 세균학적 균소실, 안전성, 유용성에서 두군간에 의미 있는 차이는 없었다. 2) 시험관내 항균력검사상 MIC가 실험군이 대조군보다 현저하게 낮았다.(p<0.05). 3) 경미한 두통, 식욕감퇴, 상복부 불쾌감, 설사등이 대조군 9예, 실험군 7예에서 발생하였고, 검사실 소견상 SGOT 혹은 SGPT 의 일시적 경미한 상승이 대조군 2명, 실험군 3명에서, 혈중 creatinine 상승이 실험군 2명에서 있었으나 경미하였다. 결론:이상의 결과로 sparfloxacin은 폐렴, 급성기관지염, 만성기관지염의 악화에서 하루 한번 투여로 enoxacin 하루 3번 투여와 유사하게 효과적이고 안전하며, 시험관내 항균력이 enoxacin보다 월등히 우수하여 임상에서도 유용하게 사용될수 있을것으로 생각된다. Background: Sparfloxacin, a new oral quinolone, has a broad spectrum, potent antimicrobial activity, prolonged half life, high concentration in sputum. The clinical efficacy and safety of sparfloxacin have been reported by some previous clinical studies performed in Japan. The objectives of this study were to evaluate the clinical and antimicrobial efficacy of this drug in respiratory tract infections compared to those of enoxacin. Methods:We performed an open controlled, randomized study in 63 patients with acute bronchitis, pneumonia, and exacerbation of chronic bronchitis at Chung Nam University hospital and Dae Jeon St. Mary's hospital from October, 1994 to April, 1995. In the control group(n=32), 100 mg enoxacin was administered orally 3 times a day and in the test group(n=31), 200 mg sparfloxacin once a day. Results: The results were as follows; 1) There were no significant differences between the two groups in clinical efficacy, bacteriological finding, and usefulness. 2) Means and SD of MICs were 0.44±0.89 ㎍/ml in the control group, 0.13±0.24 ㎍/ml in the test group. There was a significant difference in MICs between the two groups(p<0.05). 3) Headache, epigastric discomfort, and loss of appetite were observed in 7 cases of the control group and in 9 cases of the test group, and transient elevations of hepatic enzyme in 2 cases of the control group, and in 3 cases of the test group. There was mild elevation of serum creatinine in 2 cases of the test group. Those laboratory abnormalities by therapy might be associated with their underlying diseases. There were no significant adverse effects caused by the drugs Conclusion:In conclusion, sparfloxacin of 200 mg once a day was as effective and well tolerated as enoxacin of 100 mg three times per day in the treatment of respiratory tract infections. Sparfloxacin is more potent antibiotics because MICs of sparfloxacin were very lower than those of enoxacin.

性別 및 年齡에 따른 體格과 體力의 特性과 變化에 關한 縱斷的 硏究Ⅱ : Emphasised on College Men of Department of Physical Education 體育專功 大學生을 中心으로

金尙國,姜東洹,張周鎬,金昇一,徐再均,金耕知,孫斗玉,鮮于攝,崔榮烈,尹宇相,金亨燉,方永鎭,朴英震,柳在忠 慶熙大學校 體育科學大學 1989 體育科學論叢 Vol.- No.2

The purpose of this study was to compare the characteristics, change in physique and physical function of college students majoring physical education and Taekwondo (454 males and 64 females of age groups ranging from 18 to 26). The results are as following: 1. The male group of 23yrs old in physical education showed highest values in 7 items(Weight, Chest Girth, Fore Arm Girth, Thigh Girth, Calf Girth, Scapular Skinfold Thickness and Suprailiac Skinfold Thickness). 2. In the Physical function, the male group of 18yrs old showed highest values in Power, Flexibility, and then 21yrs old at Back Strength, Vital Capacity, and 23yrs old at Grip Strength, and 25yrs old at Blood Pressure, respectively. 3. In the physique, the male group of 22yrs old showed highest values in Weight, Chest Girth, Thigh Girth, Calf Girth, and then 24yrs old Upper Arm Girth, Fore Arm Girth, and 19yrs old at Height, Upper Limb Length, respectively. 4. In Physical Function, the 22yrs old showed highest values in Back Strength, Vital Capacity, and then 23yrs old at Side Step, Trunk Extension, but 18yrs old showed lower Values in Grip Strength, Side Step, Vital Capacity and Blood Pressure. 5. The female group of 22yrs old showed highest values in 8 items(Height, Sitting Height, Waist Girth, Upper Limb Length, Lower Limb Length, Skinfold Thickness), and then 18yrs old at 5 items (Weight, Upper Arm Girth, Fore Arm Girth, Thigh Girth, Calf Girth), respectively. 6. In the physical function, the 22yrs old showed highest Values in Grip strength, Back Strength, Power, 5 Minute Run, and 18yrs old at flexibility, Harvard Step Test, respectively. 7. In the change of the physique for two years(1988-1989) in the male group, majoring Physical education the 22yrs old showed increase in 4 items, and the 20yrs old in 3 items, but 18yrs old showed decrease in 3 items. 8. In the change of the physical function for two years in the male group, the 20yrs old showed increase in 4 items, and the 21, 25, 26yrs old in 3 items, but the 19yrs old showed decrease in 6 items, and 18, 22 yrs old in 5 items, respectively. 9. The change of the physique for two years in all female group, of 18, 19, 20, 21yrs old showed increase in 11 items except Skinfold Thickness. 10. In the change of physical function for two years in female group, the 18yrs old showed increase in 3 items, and then 20yrs old in 5 items, but 19, 22yrs old decreased 12 items, respectively. 11. The highest significant difference in physique between male and female was found in weight(mean Value 17.5%), and the lowest difference was found Thigh Girth, Calf Girth(1,3%), Upper Limb Length, Lower Limb Length(2.5%). 12. The Highest difference in physical function was Strength (mean Value 40%), Vital Capacity (33%), Power(22%), but Lower Trunk Flexion, Foot Balance(3.4%). 13. In the difference of Physique and physical function between physical education major and taekwondo major, the physical education showed higher values in skinfold Thickines (mean Value 16.5%), Weight, Waist Girth(4.7%) and Strength(33%), Endurance(5.6%), but subjects majoring Taekwondo showed higher values in Flexibility and Foot Balance. 14. In all male groups, Waist Girth, Scapular Skinfold Thickness, Back Strength, Sargent Jump, Trunk Extension and Diastolic Blood Pressure were showed a significantly related at 0.001 level.

정보 검색 시스템의 색인에 여러개 정보를 효율적으로 추가하기 위한 새로운 전략

김진호,노희영,김주영,김상욱 강원대학교 정보통신연구소 1998 정보통신논문지 Vol.2 No.-

?? -tree is widely used as index structure in information retrieval system such as digital library and World-Wide Web information retrieval engine. The Information retrieval ststem often reflect all information collected independently by robot agent into their current indexes and directories at one time. When many key values are inserted into an index implemented as ?? -tree, much processing time will be required to search and to split nodes to look for the leaf nodes inserted. In order to Solve this problem, in this paper, we propose BULK_ADD strategy which creates a new ?? -tree by merging the existing ?? -tree and the set of data to be inserted. We also analyze performance of proposed BULK-ADD strategy. From the performance analysis, we found that the proposed strategy has better performance than the algorithm which inserts repeatedly into ?? -tree, when the nember of inserted data objects is over specific ratio(4%) of the existing index size. This ratio can be used as the criteria selecting the scheme to insert multiple data objects into ?? -tree with the minimum processing time in information scheme to insert multiple data objects into ?? -tree with the minimum processing time in information retrieval systems. At the same time, the period of index update can be determined on the basis of this ratio, if we can predict the data quantity newly collected during a specific time interval.