• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1997년도 봄 학술발표회 논문집
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• pp.430-435
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• 1997

This paper represents the investigation of the shear fatigue behavior and damage procedure of reinforced concrete beams subject to repeated loading using the strut-tie model. Damage Index is defined as the ratio of deflection at each cycle to the ultimate deflection of inelastic region. Two types of strut-tie model are designed according to the inclined angles of concrete-struts and the consideration of concrete-ties. In one model, aggregate interlock and resistance of uncracked concrete are regarded as the main sheat resisting mechanism and in the other, stirrup is. The results show that the strut-tie model combined with damage index can describe the shear fatigue behavior of RC beams subject to repeated loading effectively.

• The Journal of Korean Physical Therapy
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• 제35권3호
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• pp.83-88
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• 2023

Purpose: This study was to investigate the effect of forward head posture (FHP) and round shoulder posture (RSP) on changes in muscle activities according to shoulder flexion and abduction tasks. Methods: Twenty-two male subjects with no history of neurological, musculoskeletal surgery or injuries, or pain in the spine region within the previous 3-month periods were recruited for this study. Craniovertebral angle (CVA) and Scapula Index were measured before performing 90° abduction and flexion tasks holding a 3kg dumbbell. Muscle activities were measured during the tasks. All measurements except height of the acromion were carried out in a sitting position at the height of the subject's knee angle of 90 degrees, and two tasks were randomly performed with the arm that the subject mainly use to throw the ball. The abduction and flexion angles were checked by the examiner using a goniometer beside the subject. Results: Correlation coefficient analysis between Scapular Index and upper trapezius muscle activity during shoulder abduction task showed significant positive correlation. No significant correlation was observed between CVA, Scapular Index, and other muscle activities. Conclusion: FHP showed increased muscle activation, making it difficult to change muscle activity under lower loads, and RSP was correlated with UT activation in shoulder abduction. Therefore, in the RSP, the loaded shoulder abduction is considered a potential risk factor for increasing shoulder muscle tension. This paper proposes an approach to treating RSP before FHP.

• 한국전문물리치료학회지
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• 제15권1호
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• pp.30-37
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• 2008

This study was designed to examine the effects of temporary immobilization of the ankle and knee joints on standing in healthy young adults with the use of a postural control mechanism. The subjects were twenty-four college students (12 males and 12 females, aged between 20 and 28). A Biodex balance system SD 950-302 and its software were used to measure indirect balance parameters in standing. Each subject underwent postural stability tests in 4-different joint conditions: free joints, ankle immobilization only, knee immobilization only, and ankle and knee immobilization. In addition, the postural stability test was conducted once with the subject's eyes open and once with the eyes closed conditions. For data analysis of the postural stability tests, the overall stability index, antero-posterior stability index, and medio-lateral stability index were recorded. The overall stability index (p=.000) and medial-lateral index (p=.003) were significantly greater different conditions with eyes closed in postural stability. Therefore, the eyes closed condition is expected to be used as an effective postural stability training for treatment planning in patients with unstable postures. In addition, training based on the dynamic multi-segment model can improve postural stability and is available to therapeutic programs, helping people with unstable balance to reduce their risk of falling.

• 한국환경복원기술학회지
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• 제15권5호
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• pp.129-144
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• 2012

This study was conducted to understand the community characteristics of benthic macroinvertebrates according to Growth Environment at 6 Palustrine Wetlands in a rural area. As growth environment factors, size, water depth, water inlet and water outlet, land-use and water environment was analyzed. Two years' quantitative collection of benthic macroinvertebrate was carried out, and it executed community analysis and ESB index calculation and also carried out twinspan, MDS and correlation analysis. As a result, the collected benthic macroinvertebrate was 1254 individuals with 3 Phylums, 6 Classes, 14 Orders, 35 Families, 52 Genera and 61 Species. Odonata and Coenagreionidae had the highest species and individuals. Dominance Index was 0.252~0.698, Diversity Index was 1.661~2.902, Evenness Index was 0.414~0.724, and Species Richness Index was 1.990~6.224. As a result of community analysis, when correlation analysis was executed, Dominance Index had the opposite tendency with Diversity Index and Evenness Index, which had the same tendency with the previous studies. When ESB Index was calculated, Grade 2 (polluted) had the highest species with 48 species (78.7%). It is determined from the Environmental quality evaluation and saprobity evaluation result according to ESB index that there is a need to revise environmental evaluation system more specifically. As a result of MDS analysis, the subject spots A and D had the highest similarity, and the subject spot E and D had a relatively high similarity. The life environment that is the closest related with species diversity is estimated by the land-use. As for number of Individual, it seems to have the closest relation with inlet, which is to be determined as a characteristics of Palustrine Wetland. Through such investigation, this study is expected to be utilized for various types of habitats including ecological pond and to be utilized for the increase of species diversity in rural areas.

• 상하수도학회지
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• 제25권1호
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• pp.7-14
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• 2011

This study was motivated by the purpose of improving the O-Index, currently used to quantify water tasty. The authors first develop the M-Index after normalizing Ca, K, and $SiO_{2}$ concentrations in the spring water, in that the concentrations are subject to their log-normal distributions. The M-Index is then compared with the O-Index based on the results of sensory tests, revealing that sensory tests are correlated with the M-Index much more than the O-Index. Furthermore, the developed index is applied to evaluate water sampled from 53 springs in Korea. It is concluded that water, sampled from five most famous springs, has high values in M-Index. In addition, water, collected from springs that are relatively accessible, contains low values, and thus is expected not to tasty good.

• 대한지역사회작업치료학회지
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• 제2권2호
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• pp.37-49
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• 2012

목적 : 본 연구의 목적은 상상연습이 뇌졸중 환자의 균형능력과 낙상 위험도 및 낙상 효능감에 미치는 영향을 알아보기 위한 것이다. 연구방법 : 뇌졸중 진단을 받은 4명의 성인을 대상으로 개별대상자 실험연구 방법 중 대상자간 다중기초선(multiple baseline across individuals)으로 설계되었다. 기초선 과정과 중재 과정을 포함해 총 20회를 4주 동안 진행하며, 기능적 손 뻗기 검사를 이용해 균형능력의 변화를 측정했다. 그리고 낙상 위험도(Tetrax) 프로그램과 낙상 효능감으로 중재 전 후를 비교했다. 시각적 분석과 2 표준편차 밴드 분석방법을 통해 나타냈다. 결과 : 상상연습 중재기간 동안, 기능적 손 뻗기 검사를 사용한 결과 대상자들의 균형능력의 향상이 나타났다. 이러한 변화로 낙상 위험도가 감소하였고, 낙상 효능감이 증가했다. 결론 : 본 연구 결과, 상상연습이 뇌졸중 환자의 균형능력 향상에 효과적임을 알 수 있었다. 향후 연구에서 더 많은 연구 대상을 통해 다양한 방법으로 균형능력을 측정하여 확인이 이루어졌으면 한다.

• Journal of Preventive Medicine and Public Health
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• 제6권1호
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• pp.87-99
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• 1973

The purpose of this project is offering fundamental and proper informations for the better health control and personnel management of the enlisted men of Marine corps in Korea. Survey has been done under 1,001 marine enlisted men for the purpose of understanding their condition of physique, vital capacity, and bodily strength. 1. Under the subject of physique, 7 items, body weight, chest-girth, relative body weight, relative chest-girth, Vervaeck index, and Roehrer index are listed, and under the subject of vital capacity, BTPS vital capacity and percent predicted vital capacity are listed, and under the subject of bodily strength, 7 items, grasping power, chinning-up, throwing a hanp-grenade, forward jumping, sitting-up, 100 meter sprinting, are listed. The total items are 16 and mean score of each one is as follow. 1)Physique : a. Height : $$168{\pm}0.15cm$$ b. Body weight : $$62.7{\pm}0.17kg$$ c. Chest-girth : $$91.4{\pm}0.16cm$$ d. Relative body weight : $$37.2{\pm}0.09$$ e. Relative chest-girth : $$54.3{\pm}0.10$$ f. Vervaeck index : $$91.6{\pm}0.15$$ g. Roehrer index : $$1.31{\pm}0.003$$ 2) Vital capacity : a. BTPS vital capacity : $$4470{\pm}20cc$$ b. % Predicted vital capacity : $$150{\pm}5.1%$$ 3) Bodily strength : a. Grasping power : $$41.4{\pm}0.26kg$$ b. Chinning-up : $$5.7{\pm}0.10$$ c. Throwing a hand-grenade : $$39.7{\pm}0.20m$$ d. Forward jumping : $$214{\pm}0.58cm$$ e. Sitting-up : $$19.1{\pm}0.25$$ f. Pushing-up : $$22.1{\pm}0.18$$ g. 100 meter sprinting : $$16.1{\pm}0.04sec$$. 2. Comparative analysis has been done about the conditional classes of marine enlisted men with the results of above mentioned 16 items. 7 classes according to the branches, 3 according to the ranks, 9 according to tile length of service are adopted respectively.

• 한국산림과학회지
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• 제97권5호
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• pp.501-507
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• 2008

The data of crown width with 4 directions, DBH, tree height, and coordinate for sample trees were collected from 30 permanent sample plots in secondary fore st of the Maoershan Experimental Forestry Farm, Northeast China. In this paper, the competition of individual trees in stand were discussed for secondary forest by using iterative Hegyi competition index and crown overlap index that represented the competitive and cooperative interactions among neighboring trees. Active competitors of subject tree in the competition zone were selected to calculate the iterative competition index. Using the results of crown classification based on the equal crown projection area, a new distance dependent competition index called crown overlap index (COI) was developed for secondary forest. The COI performed well in describing the crown competition rather than crown competition factor (CCF). The individual-based competition index discussed in this paper will provide more precise for developing individual tree growth models for secondary forest and it can also use to adjust the stand structure for spatial optimal management.

• 정보관리학회지
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• 제16권2호
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• pp.183-199
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• 1999

인용색인은 기본적으로 인용색인과 원문색인(서지부), 순열주제색인의 세 부분으로 구성된다. 이 세가지 기본색인과 다양한 참조기능을 갖는 인용색인을 작성하는 데 필요한 요소를 추출하기 위하여 한국정보관리학회의 정보관리학회지, 제 1권 제 1호(1984)부터 제 15권 제 3호(1998)까지 15년간 총 30호를 분석하였다. 인용색인에 포함되어야 할 필수요소로 저자, 소속기관명, 논문명, 서명 혹은 학술지명, 권호 및 면수, 발행년, 키워드, 본문언어, 주제분야, 참고문헌 통계 데이터 등 10가지의 기본정보를 선정하고 기술형식에 대하여 논의하였다. 또한 국내 학술지의 인용색인시스템을 개발한다는 관점에서 동 학회지의 원저논문 및 참고문헌을 분석하여 해결해야 할 문제와 수록 데이터요소를 제시하였다.

• 한국도서관정보학회지
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• 제50권1호
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• pp.251-272
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• 2019

본 연구는 Scopus의 분류시스템에서 설정된 주제분류의 활용도와 상호연관성을 조사했다. 연구 수행의 범위는 2017년도 Scopus 색인에 포함된 저널의 대 주제 분류 및 소 주제분류를 포함하였다. 연구의 결과는 Scopus의 주제 분류별 활용도에서의 빈도수나 주제분류간 상호연관성에서도 다양한 양상을 보였다. 이 가운데 대 주제분류활용률과 상호연관성의 양상은 의학과 사회과학분야에서 가장 활발하고 다양하게 나타났다. 한편, 소 주제분류에서는 "2700 General Medicine"이 상호연관 측면에서 최고의 다양성을 보여주었다. 이외에 쌍을 이루는 소 주제분류 간의 동시 빈도수 분석에서 특징적인 상호연관성을 보이는 경우들을 발견하였는데 같은 분야의 주제어가 비슷한 연관성, 분야는 다르지만 주제가 연결된 연관성, 주제어간 상,하위범주의 연관성의 경우들이다. 소수의 소 주제분류간에는 매우 유사한 주제어를 사용한 경우들도 있었다. 이러한 주제분류별 활용도와 주제분류간의 상호연관성들이 보여주는 다양한 양상들로 인해 연구수행에 있어서 대 주제분류뿐만 아니라 대주제 분류에 많은 영향을 미치는 소 주제분류까지도 면밀하게 살펴볼 필요가 있다.