• 한국전문물리치료학회지
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• 제30권1호
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• pp.1-7
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• 2023

Background: Like many other countries, falls and related injuries in older adults are great concerns in South Korea. In particular, falls are common in medical institutions, often causing the increase of the length of hospitalization. Objects: The purpose of this review was to help understand and address falls in hospitalized individuals in South Korea. Methods: The review was conducted on literature published in Korean from 2010 to 2022, searched in the Korea Citation Index and PubMed. Keywords used for the search were as follows: falls, fall risk, fall risk assessment, hospital, inpatient, intervention, Korea, and prevention. Results: A total of 54 articles were found and reviewed. The most common place of fall accidents was the inpatient room, where there were many cases of falls while walking. Loss of balance was the most common cause of falls, and many falls occurred in patients admitted to the internal medicine. Furthermore, a risk of falling increased with the type of medications taken. In terms of tools to assess patients' fall risk, the Morse Fall Scale (MFS) was commonly used. Patient-specific fall prevention activities were common to address falls, and they decreased the frequency of falls and the fear of falling. Factors influencing the effectiveness of the fall prevention activities included attitudes toward falls, education, environmental factors, patient safety culture, and self-efficacy in preventing falls. Conclusion: Our results should help understand and address falls and injuries in medical institutions.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제18권2호
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• pp.33-43
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• 2012

This study purposes to present the improvement on the index by analyzing concretely the certification and evaluation index and the actual certification acquisition focusing on the buildings acquiring the barrier-free (BF) certification. So, after analyzing the screening results of the buildings acquiring the BF certification and then grasping the general application level based on the above analysis, this study tries to present the improvement on the BF certification index by analyzing the detailed applications of the BF certification-acquired buildings and then grasping the problems on the evaluation index of the current certification system. It was analyzed that the items which applied the BF construction method generalized to the common buildings through the Act on the Promotion of Convenience in medium facilities and the items with higher distribution points were shown as high in terms of points and the acquired point level of items which influenced by the shape and condition of side and land to defile the appearance of buildings were low.

• 한국안전학회지
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• 제25권6호
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• pp.186-196
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• 2010

It has been well known that traffic accidents occur under combined functional contributions of drivers, vehicles and road facilities, and that evaluation of safety levels for a specific road section or point is generally much complicated. Additionally, most of traffic accidents occur randomly implicating it is necessary to be evaluated in terms of probability theory. Thus, the evaluation model which reflects various characteristics and probabilistic distributions of traffic accidents has been necessary. The present paper provides a reliability based model with variables of probabilistic operating speeds and design speeds together which have been individually explaining associated characteristics in traffic accidents. Consequently, the model made it possible for speed management and road improvement projects to be evaluated in a common index. Application studies were performed in three cases. Through the studies, couples of facts were identified that the model successfully considered the probabilistic operating speeds and design speeds together and that then, the model evaluated road safety alternatives relatively which are complicatedly characterized and differently located.

• 한국수산과학회지
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• 제40권4호
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• pp.210-219
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• 2007

The benthic marine algal flora and community structure were examined at five sites of the Taean Peninsula, Korea, during July-August 2005. Ninety-six algal species were Identified, including 14 green, 21 brown, and 60 red algae, and 1 marine plant. The common species that occurred at the five sites were Sargassum thunbergii, Gelidium divaricatum, Caulacanthus okamurae, Gracilavia vermiculophylla, and Neorhodomela aculeata. Sthunbergii was the dominant species in terms of coverage and biomass at ail of the study sites. The average biomass varied from $23.72g/m^2$ in dry weight at Chaeseokpo to $66.43g/m^2$ at Padori. The species could be divided into six functional groups in terms of morphological characteristics: 41 coarsely branched forms, 25 filamentous forms, 16 sheet forms, 7 thick leathery forms, including the marine plant Phyllospadix iwatensis, 4 crustose forms, and 3 Jointed calcareous forms. The seaweed communities at the five study sites were unstable and the environmental conditions were bad or very bad. Among the five study sites, the ecological evaluation index (EEI) and diversity index (H') were maximal at Padori at 2.29 and 1.98, respectively. By contrast, the dominance index (DI) was minimal at Padori (0.55) and maximal at Baramarae (0.96). Therefore, we conclude that the rocky shore at Padori has the best environment among the five study sites, although the species richness and biomass of seaweeds have declined continuously over the last 10 years.

• Journal of Power Electronics
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• 제19권4호
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• pp.907-921
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• 2019

This paper presents two advanced hybrid pulse-width modulation (PWM) strategies for multilevel inverters (MLIs) that provide both common-mode voltage (CMV) elimination and current ripple reduction. The first PWM utilizes sequences that apply one switching state at the double ends of a half-carrier cycle. The second PWM combines the advantages of the former and an existing four-state PWM. Analyses of the harmonic characteristics of the two groups of switching sequences based on a general switching voltage model are carried out, and algorithms to optimize the current ripple are proposed. These methods are simple and can be implemented online for general n-level inverters. Using a three-level NPC inverter and a five-level CHB inverter, good performances in terms of the root mean square current ripple are obtained with the proposed PWM schemes as indicated through improved harmonic distortion factors when compared to existing schemes in almost the entire region of the modulation index. This also leads to a significant reduction in the current total harmonic distortion. Simulation and experimental results are provided to verify the effectiveness of the proposed PWM methods.

• 한국문헌정보학회지
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• 제48권4호
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• pp.297-322
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• 2014

본 연구의 목적은 KCI의 인문학, 사회과학, 예술체육 분야 저자키워드를 대상으로 의미적, 형태적 분석을 통해 기존에 연구된 개념범주 텍사노미의 적합성을 확인하고 실용적인 개선 방안을 제시하는 것이다. 연구를 통해 '실체, 추상, 일반/공통, 개체'의 네 개 최상위수준의 개념범주를 보다 구체적이고 핵심 개념이 반영된 일곱 개의 범주 '개체, 활동/기능, 특성, 이론/방법, 형식/틀, 일반/공통, 인스턴스'로 변경하였다. 중위범주와 하위범주의 경우 신설, 세분화, 통합, 삭제, 이동 등의 방법으로 개념범주의 계층 구조를 단순화시키고 범주 간 용어분포의 불균형을 개선하였다. 구조적학술용어사전(STNet)을 테스트베드로 삼아 수정된 개념범주 텍사노미를 적용한 결과 용어의 분포가 균형적으로 이루어지고, 용어의 속성 표현이 상세화되는 효과를 보이는 것으로 나타났다.

• 한국조사연구학회지:조사연구
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• 제6권1호
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• pp.1-38
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• 2005

본 논문은 부패문제의 중요성에 대한 대중적 인식의 확산과 부패를 측정하는 연구모형의 중요성을 고려하여 기존의 부패지수 측정모형들을 비교 ${\cdot}$ 분석하였다. 이 연구에서는 서울시정개발연구원에서 개발한 “서울시 시정청렴성지수 측정모형”과 “경실련 부패지수 측정모형”을 분석의 대상으로 선정하여 ‘지표 및 지수선정방식의 적정성’, ‘조사설계의 적절성’, ‘통계활용의 적절성’의 3가지 측면에서 분석하였다. 본 연구에서 발견된 두 모형의 문제점은 다음과 같다. 첫째, 지표 및 지수선정방식에 있어서, 경실련부패지수는 지표가 너무 세분화되어 있고, 중복적인 지표도 다수 포함되어 있었으며, 지표별 가중치를 두지 않음으로써 지표별 중요도를 고려하지 않았다. 시정청렴지수 측정모형은 가중치를 부여하기 위한 가중치평가단에 일반시민에 대한 조사가 포함되어 있지 않아 부패를 체감하는 당사자인 민원인들의 의견을 수렴하지 못하였다 서울시 모형은 부패수준에 대한 직접적인 질문이 빠져 있어 실질적인 부패수준과 인식수준과의 차이점을 밝혀내지 못하였다. 둘째, 조사 설계의 적절성 여부에서는, 경실련 부패지수는 표본수가 너무 적어서 조사의 신뢰성에 문제가 있었으며, 조사방법에 있어서 각 구청에서 출구조사를 실시함으로써 객관성을 떨어뜨리고 있다. 질문문항의 수도 총 38문항으로 시정청렴성지수의 13문항에 비하여 지나치게 많은 감이 있으며 질문을 작성함에 있어 불명확하고 중복적인 용어가 사용되고 있었다. 셋째, 통계활용의 적절성 부분에서는, 시정청렴성지수 측정모형의 경우, 객관적 통계의 활용에 문제점을 제기하여 지표체계에서 삭제하였으며, 경실련 부패지수에서는 1995년부터 1999년까지의 서울시 각 자치구 소속 공무원의 징계자료를 수집하여 자료로 사용하였다. 통계를 자료로 사용가능하기 위해서는 충분한 양의 징계건수가 필요하며, 통계의 신뢰성이 높아야 한다. 현재 우리나라에서 집계되는 통계는 부패의 일각만을 나타내는 것으로 판단된다. 게다가 징계 유형별로 어느 정도의 가중치를 줄 것인가에 대한 객관적인 방법이 아직 개발되어 있지 않은 실정이어서 이러한 점에서 아직까지 객관적 통계자료의 사용은 한계를 가지고 있다. 위의 문제점들이 개선되기 위해서는 평가지표에 객관적 자료가 추가되고, 다양한 평가지표들이 발굴되어야 하며, 각 지표간의 가중치문제가 해결되어야 한다.

• 경영과정보연구
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• 제17권
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• pp.1-24
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• 2005

The purpose of this study is to figure out the effects of advertisements (functional value, sentimental value, self-expressing value) depending on the gender in regard of the attitude towards the advertisement, brand attitude, purchase intention, and the characteristic and quality of the product. From the study on the university students, there was a meaningful interaction among the independent variables in regard of attitude towards advertisement, brand attitude, purchase intention, and characteristic of the product in the four dependent measurements used for the index of advertisement effects. In terms of the attitude towards advertisements, brand attitude, purchase intention, and the characteristic of the product according to the gender and value suggestion, functional convenience was more influential for men compared to the sentimental convenience and self-expressing value. On the other hand, self-expressing value was more influential for women in terms of the advertisement effect and the characteristic of the product. The main effects depending on the gender were common in four dependent values such as attitude towards advertisement, brand attitude, purchase intention and characteristic of the product, and the average of all values was higher from women. Thereby, it can be said that women show more positive advertisement effects in terms of attitude and purchase than men. The main effects on the value suggestion were meaningfully indicated in advertisement attitude, brand attitude, and characteristic of the product except the purchase intention. Also, the functional and self-expressing value made better advertisement effect, while the sentimental value showed a comparatively lower advertisement effect. In terms of the sentimental value, a comparatively low advertisement effect was shown statistically compared to the functional and self-expressing value in all dependent values, but there was no big difference depending on the gender. That is, in terms of the sentimental value, a separate value suggesting advertisement can be more influential when it is combined with the functional value for men, and for women if it is combined with self-expressing value.

• Nuclear Engineering and Technology
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• 제48권1호
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• pp.144-152
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• 2016

Human capabilities, such as technical/nontechnical skills, have begun to be recognized as crucial factors for nuclear safety. One of the most common ways to improve human capabilities in general is training. The nuclear industry has constantly developed and used training as a tool to increase plant efficiency and safety. An integrated training framework was suggested for one of those efforts, especially during simulation training sessions of nuclear power plant operation teams. The developed training evaluation methods are based on measuring the levels of situation awareness of teams in terms of the level of shared confidence and consensus as well as the accuracy of team situation awareness. Verification of the developed methods was conducted by analyzing the training data of real nuclear power plant operation teams. The teams that achieved higher level of shared confidence showed better performance in solving problem situations when coupled with high consensus index values. The accuracy of nuclear power plant operation teams' situation awareness was approximately the same or showed a similar trend as that of senior reactor operators' situation awareness calculated by a situation awareness accuracy index (SAAI). Teams that had higher SAAI values performed better and faster than those that had lower SAAI values.

• 대한의용생체공학회:의공학회지
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• 제30권5호
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• pp.428-437
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• 2009

The Performance research about EEG-BCI algorithm in BCI-naive subjects is very important for evaluating the applicability to the public. We analyzed the result of the performance evaluation experiment about the EEG-BCI algorithm in BCI-naive subjects on three different aspects. The EEG-BCI algorithm used in this paper is composed of the common spatial pattern(CSP) and the least square linear classifier. CSP is used for obtaining the characteristic of event related desynchronization, and the least square linear classifier classifies the motor imagery EEG data of the left hand or right hand. The performance evaluation experiments about EEG-BCI algorithm is conducted for 40 men and women whose age are 23.87${\pm}$2.47. The performance evaluation about EEG-BCI algorithm in BCI-naive subjects is analyzed in terms of the accuracy, the relation between the information transfer rate and the accuracy, and the performance changes when the different types of cue were used in the training session and testing session. On the result of experiment, BCI-naive group has about 20% subjects whose accuracy exceed 0.7. And this results of the accuracy were not effected significantly by the types of cue. The Information transfer rate is in the inverse proportion to the accuracy. And the accuracy shows the severe deterioration when the motor imagery is less then 2 seconds.